tag:blogger.com,1999:blog-6991422001822522862024-02-07T04:53:29.731-08:00Health News Reportmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comBlogger1529125tag:blogger.com,1999:blog-699142200182252286.post-14865093157781260382012-03-02T12:58:00.000-08:002012-03-03T17:31:05.401-08:00Regular smear tests boost chances of cure from 66 percent to 92 percentΩ<br /><br />Women can boost their chances of surviving cervical cancer substantially through regular cervical screening, claims a research paper published today on bmj.com.<br /><br />The authors from the Centre for Research and Development in Gävle and the Karolinska Institutet, Stockholm, Sweden, studied all 1230 women diagnosed with cervical cancer nationwide between 1999 and 2001.<br /><br />In the study, which is the first to estimate chances of surviving cervical cancer, both screen-detected cancers (those with an abnormal smear result one to six months before cancer diagnosis) and symptomatic cancers (all remaining cases) were tested. The objective of the paper was to see if the detection of cervical cancer by screening resulted in better prognosis or just resulted in earlier diagnosis, without postponing the time of death.<br /><br />For women of screening age there was a 92% cure rate after a screen-detected diagnosis, which decreased to 66% for symptomatic diagnosis. This result shows a substantial increase in chances of cure for women who attended cervical screening compared to those who did not. The chances of cure were also higher for women who attended screening following an invitation, compared to those who were overdue for an examination.<br /><br />Furthermore, three quarters of the 373 women who died from cervical cancer had not had a cervical smear in the recommended time frame.<br /><br />The authors conclude that screening both reduces the risk of cervical cancer and is associated with improved cure. They state that "detection of invasive cancer by screening implies a very favourable prognosis compared to cases detected by symptoms". The authors recommend that the effect on the cure for cervical cancer should be included when evaluating screening programmes.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-73636886019513654012012-03-02T12:55:00.000-08:002012-03-03T17:31:05.424-08:00Diabetes risk from sitting aroundΩ<br /><br />A new study has found that women who stay seated for long periods of time every day are more prone to developing type 2 diabetes, but that a similar link wasn't found in men.<br /><br />Researchers from the University of Leicester Departments of Health Sciences and Cardiovascular Sciences revealed that women who are sedentary for most of the day were at a greater risk from exhibiting the early metabolic defects that act as a precursor to developing type 2 diabetes than people who tend to sit less.<br /><br />The team assessed over 500 men and women of the age of 40 or more about the amount of time spent sitting over the course of a week, helped out by tests on the level of specific chemicals in their bloodstream that are linked to diabetes and metabolic dysfunction. It was found that the women who spent the longest time sitting had higher levels of insulin, as well as higher amounts of C-reactive protein and chemicals released by fatty tissue in the abdomen, leptin, and interleukin6, and which indicate problematic inflammation.<br /><br />The study, published in the American Journal of Preventive Medicine, revealed that the link between sitting time and diabetes risk was much stronger in women than men, but could not pinpoint why there was a gender difference, although it was suggested that women might snack more often than men during sedentary behaviour, or because men tend to take part in more robust activity when they do get up and about.<br /><br />Dr Thomas Yates who led the study said: "This study provides important new evidence that higher levels of sitting time have a deleterious impact on insulin resistance and chronic low-grade inflammation in women but not men and that this effect is seen regardless of how much exercise is undertaken. This suggests that women who meet the national recommendations of 30 minutes of exercise a day may still be compromising their health if they are seated for the rest of the day.<br /><br />'It therefore suggests that enabling women to spend less time sitting may be an important factor in preventing chronic disease.' The paper calls for further experimental research investigating the effect of reduced sitting time on human volunteers<br /><br />Dr Yates added: "If these results are replicated, they have implications for lifestyle recommendations, public health policy, and health behaviour change interventions, as they suggest that enabling women to spend less time sitting is an important factor in preventing chronic disease."<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-24281393282072839622012-03-02T12:53:00.000-08:002012-03-03T17:31:05.443-08:00Heart Healthy Choices Early On Pay Off LaterΩ<br /><br />Maintaining a healthy lifestyle from young adulthood into your 40s is strongly associated with low cardiovascular disease risk in middle age, according to a new Northwestern Medicine study.<br /><br />“The problem is few adults can maintain ideal cardiovascular health factors as they age,” said Kiang Liu, first author of the study. “Many middle-aged adults develop unhealthy diets, gain weight and aren’t as physically active. Such lifestyles, of course, lead to high blood pressure and cholesterol, diabetes and elevated cardiovascular risk.”<br /><br />Liu is a professor and the associate chair for research in the department of preventive medicine at Northwestern University Feinberg School of Medicine.<br /><br />“In this study, even people with a family history of heart problems were able to have a low cardiovascular disease risk profile if they started living a healthy lifestyle when they were young,” Liu said. “This supports the notion that lifestyle may play a more prominent role than genetics.”<br /><br />Published Feb. 28 in the journal Circulation, this is the first study to show the association of a healthy lifestyle maintained throughout young adulthood and middle age with low cardiovascular disease risk in middle age. <br /><br />The majority of people who maintained five healthy lifestyle factors from young adulthood (including a lean body mass index (BMI), no excess alcohol intake, no smoking, a healthy diet and regular physical activity) were able to remain in this low-risk category in their middle-aged years. <br /><br />In the first year of the study, when the participants’ average age was 24 years old, nearly 44 percent had a low cardiovascular disease risk profile. Twenty years later, overall, only 24.5 percent fell into the category of a low cardiovascular disease risk profile. <br /><br />Sixty percent of those who maintained all five healthy lifestyles reached middle age with the low cardiovascular risk profile, compared with fewer than 5 percent who followed none of the healthy lifestyles. <br /><br />Researchers used data collected over 20 years from the Coronary Artery Risk Development in (Young) Adults (CARDIA) study. It began in 1985 and 1986 with several thousand 18 to 30 year-olds and has since followed the same group of participants.<br /><br />For this study, the researchers analyzed data such as blood pressure, cholesterol, blood sugar, BMI, alcohol intake, tobacco use, diet and exercise from more than 3,000 of the CARDIA participants to define a low cardiovascular disease risk profile and healthy lifestyle factors.<br /><br />If the next generation of young people adopt and maintain healthy lifestyles, they will gain more than heart health, Liu stressed. <br /><br />“Many studies suggest that people who have low cardiovascular risk in middle age will have a better quality of life, will live longer and will have lower Medicare costs in their older age,” he said. “There are a lot of benefits to maintaining a low-risk profile.” <br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-46067330081100032102012-03-02T12:52:00.000-08:002012-03-03T17:31:05.464-08:00Cocoa may enhance skeletal muscle functionΩ<br /><br />A small clinical trial led by researchers at UC San Diego School of Medicine and VA San Diego Healthcare System (VASDHS) found that patients with advanced heart failure and type 2 diabetes showed improved mitochondrial structure after three months of treatment with epicatechin-enriched cocoa. Epicatechin is a flavonoid found in dark chocolate.<br /><br />The results of this initial study has led to the implementation of larger, placebo-controlled clinical trial at UC San Diego School of Medicine and VASDHS to assess if patients with heart failure and diabetes show improvement in their exercise capacity when treated with epicatechin-rich cocoa.<br /><br />The study published this week by the journal Clinical and Translational Science looked at five profoundly ill patients with major damage to skeletal muscle mitochondria. Mitochondria are structures responsible for most of the energy produced in cells. These "fuel cells" are dysfunctional as a result of both type 2 diabetes and heart failure, leading to abnormalities in skeletal muscle. In patients with heart failure and diabetes abnormalities in both the heart and skeletal muscle result in impaired functional capacity. These patients often complain of shortness of breath, lack of energy and have difficulty walking even short distances.<br /><br />The trial participants consumed dark chocolate bars and a beverage with a total epicatechin content of approximately 100 mg per day for three months. Biopsies of skeletal muscle were conducted before and after treatment. After the three-month treatment, the researchers looked at changes in mitochondria volume and the abundance of cristae, which are internal compartments of mitochondria that are necessary for efficient function of the mitochondria, and measurable by electron microscopy.<br /><br />"The cristae had been severely damaged and decreased in quantity in these patients," said one of the senior investigators, Francisco J. Villarreal, MD, PhD of UC San Diego's Department of Medicine's Division of Cardiology. "After three months, we saw recovery – cristae numbers back toward normal levels, and increases in several molecular indicators involved in new mitochondria production."<br /><br />The results, which mimicked earlier studies showing improvement in skeletal and heart muscle function in animal models after treatment with epicatechin, were promising enough to prompt the larger study.<br /><br />The principal investigator of this trial was Pam R. Taub, MD, assistant professor of medicine at UC San Diego and the VA San Diego Healthcare System. Taub will be leading the new clinical trial at UC San Diego that will enroll normal sedentary subjects as well as patients with heart failure/diabetes who will be treated with placebo, or epicatechin-rich chocolate.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-23595810943193604442012-03-02T12:18:00.000-08:002012-03-03T17:31:05.484-08:00Are Selenium Supplements Good For You? Yes And NoΩ<br /><br />If you lack selenium, supplements are good for you, if you have enough they could raise your risk of developing diabetes type 2, says a study published Online First in The Lancet. The authors explain that the number of people taking selenium supplements has grown considerably over the last few years<br /><br />Study author, Margaret Rayman from the University of Surrey, Guilford, UK, said:<br /><br /> "The intake of selenium varies hugely worldwide. Intakes are high in Venezuela, Canada, the USA, and Japan, but lower in Europe. Selenium-containing supplements add to these intakes, especially in the USA where 50% of the population takes dietary supplements." <br /><br /><br /><br />Selenium is a trace mineral that is essential to good health in small amounts. Higher selenium intake or status (levels in the blood) have been demonstrated to improve male fertility, provide some protection against bladder, lung, colorectal system, and prostate cancers, and have antiviral effects. Low selenium intake or status as been associated with increased risk of poor immune function, cognitive decline, and death.<br /><br />However, evidence indicates that this mineral has a limited therapeutic range and that high levels of selenium may have detrimental effects, such increasing the risk of type 2 diabetes.<br /><br />The use of selenium supplements has become extensive over the last decade, primarily due to the theory that it can decrease the risk of developing cancer and other diseases. Based on the results of observational studies, selenium supplements have been marketed for numerous conditions. Although, results from human trials to confirm the effectiveness of these supplements has differed.<br /><br />These differing results are because the studies were conducted in different populations with different genetic backgrounds and selenium status, according to Rayman.<br /><br />Rayman states that the differing results can be explained by the fact that selenium supplements, as for many nutrients, only benefits individuals when they lack certain nutrients.<br /><br />According to Rayman, individuals with low blood selenium levels are most likely to receive the greatest benefit from selenium supplementation. However, to date, the largest trials have been conducted in countries like the USA, were selenium status is good. More trials are required in populations with low selenium status.<br /><br />In addition, the study indicates that the interaction between genetic background and selenium intake or status could be vital - individuals could be either less genetically receptive to the benefits of selenium-containing proteins (selenoproteins) in the body or to selenium supplements, or more receptive:<br /><br />Rayman said:<br /><br /> "Since polymorphisms is selenoproteins affect both selenium status and disease risk or prognosis, future studies must genotype participants." <br /><br /><br /><br />Rayman concludes:<br /><br /> "The crucial factor that needs to be emphasized is that people whose blood plasma selenium is already 122 µg/L or higher - a large proportion of the US population (the average level in American men is 134 µg/L) - should not take selenium supplements. However, there are various health benefits, and no extra risk, for people of lower selenium status (plasma level less than 122 µg/L), who could benefit from raising their status to 130-150 µg/L - a level associated with low mortality."maestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-57559629996474938212012-03-01T14:46:00.000-08:002012-03-03T17:31:05.503-08:00Aspirin may counteract potential trans fat-related stroke risk in older womenΩ<br /><br />Older women whose diets include a substantial amount of trans fats are more likely than their counterparts to suffer an ischemic stroke, a new study shows.<br /><br />However, the risk of stroke associated with trans fat intake was lower among women taking aspirin, according to the findings from University of North Carolina at Chapel Hill researchers.<br /><br />The study, "Trans Fat Intake, Aspirin and Ischemic Stroke Among Postmenopausal Women," was published Thursday (March 1, 2012) online in the journal Annals of Neurology.<br /><br />The study of 87,025 generally healthy postmenopausal women aged 50 to 79 found that those whose diets contained the largest amounts of trans fats were 39 percent more likely to have an ischemic stroke (clots in vessels supplying blood to the brain) than women who ate the least amount of trans fat. The risk was even more pronounced among non-users of aspirin: those who ate the most trans fat were 66 percent more likely to have an ischemic stroke than females who ate the least trans fat.<br /><br />However, among women who took aspirin over an extended period of time, researchers found no association between trans fat consumption and stroke risk – suggesting that regular aspirin use may counteract trans fat intake's adverse effect on stroke risk among women.<br /><br />Trans fat is generally created in the food production process and is found in commercially prepared foods, including many shortenings, cake mixes, fried fast foods, commercially baked products (such as doughnuts, cakes and pies), chips, cookies and cereals.<br /><br />Researchers from the UNC Gillings School of Global Public Health studied women who were enrolled in the Women's Health Initiative Observational Study. From 1994 to 2005, 1,049 new cases of ischemic stroke were documented.<br /><br />Women who consumed the highest amount of trans fat also were more likely to be smokers, have diabetes, be physically inactive and have lower socioeconomic status than those who consumed the least trans fat, the study showed.<br /><br />"Our findings were contrary to at least two other large studies of ischemic stroke," said Ka He, Sc.D., M.D., associate professor of nutrition and epidemiology at the UNC public health school. "However, ours was a larger study and included twice as many cases of ischemic stroke. Our unique study base of older women may have increased our ability to detect the association between trans fat intake and ischemic stroke among non-users of aspirin."<br /><br />He said aspirin may lower the risk of ischemic stroke because of its anti-inflammatory and anti-platelet clumping properties.<br /><br />The UNC researchers did not find any association between eating other kinds of fat (including saturated, monounsaturated or polyunsaturated fat) and ischemic strokes.<br /><br />"Our findings highlight the importance of limiting the amount of dietary trans fat intake and using aspirin for primary ischemic stroke prevention among women, especially among postmenopausal women who have elevated risk of ischemic stroke," said lead author Sirin Yaemsiri, a doctoral student in the school's epidemiology department.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-49760461104616075322012-03-01T14:40:00.000-08:002012-03-03T17:31:05.526-08:00Nutrient found in dark meat of poultry, some seafood, may have cardiovascular benefitsΩ<br /><br />A nutrient found in the dark meat of poultry may provide protection against coronary heart disease (CHD) in women with high cholesterol, according to a study by researchers at NYU Langone Medical Center.<br /><br />The study, published online in the European Journal of Nutrition, evaluated the effects of taurine, a naturally-occurring nutrient found in the dark meat of turkey and chicken, as well as in some fish and shellfish, on CHD. It revealed that higher taurine intake was associated with significantly lower CHD risk among women with high total cholesterol levels. The same association was not seen in women with low cholesterol levels, however.<br /><br />There is very little information available about taurine, said principal investigator Yu Chen, PhD, MPH, associate professor of epidemiology at NYU School of Medicine, part of NYU Langone Medical Center. While there have been some animal studies that indicate taurine may be beneficial to cardiovascular disease, this is the first published prospective study to look at serum taurine and CHD in humans, she explained. "Our findings were very interesting. Taurine, at least in its natural form, does seem to have a significant protective effect in women with high cholesterol."<br /><br />Coronary heart disease is the leading killer of American men and women, causing one in five deaths. Also known as coronary artery disease, it is caused by the buildup of plaque in the arteries to the heart. Large prospective epidemiologic studies have provided evidence that nutritional factors are important modifiable risk factors for CHD.<br /><br />Dr. Chen and colleagues conducted their study using data and samples from the NYU Women's Health Study. The original study enrolled more than 14,000 women, 34 to 65 years of age, between 1985 and 1991 at a breast cancer screening center in New York City. Upon enrollment, a wide range of medical, personal and lifestyle information was recorded and the data and samples continue to be utilized for a variety of medical studies.<br /><br />For the serum taurine study, funded by the American Heart Association, the researchers measured taurine levels in serum samples collected in 1985 – before disease occurrence – for 223 NYUWHS participants who developed or died from CHD during the study follow up period between 1986 and 2006. The researchers then compared those samples to the taurine levels in serum samples collected at the same time for 223 participants who had no history of cardiovascular disease.<br /><br />The comparison revealed serum taurine was not protective of CHD overall. However, among women with high cholesterol, those with high levels of serum taurine were 60 percent less likely to develop or die from CHD in the study, compared to women with lower serum taurine levels. If future studies are able to replicate the findings, taurine supplementation or dietary recommendations may one day be considered for women with high cholesterol at risk for CHD.<br /><br />"It is an interesting possibility," she said. "If these findings are confirmed, one day we might be able to suggest that someone with high cholesterol eat more poultry, specifically dark meat."<br /><br />Dr. Chen explained that Caucasian women comprised more than 80 percent of the study population and, therefore, the results may not at this time be generalized to men or other races, but suggested that future studies should be conducted in these populations. In addition, she explained, it is unclear whether synthetic taurine as an additive in food and drink products will have the same benefit observed in this study, and health effects of these products should be investigated separately. "We studied taurine found in the blood that originated from natural sources," Dr. Chen said. "The nutrient being added to energy drinks or supplements is man-made and is added in unstudied amounts. These products also often contain not only very high amounts of taurine, but a multitude of other ingredients as well – such as caffeine and ginseng – that may influence CHD risk."<br /><br />The researchers are currently using NYUWHS data to evaluate the effect of taurine on the occurrence of stroke in another study funded by the National Heart, Lung, and Blood Institute (NHLBI).<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-62873406422829692092012-02-29T08:55:00.000-08:002012-03-03T17:31:05.554-08:00Higher Death Risk With Sleeping PillsΩ<br /><br />People are relying on sleeping pills more than ever to get a good night's rest, but a new study by Scripps Clinic researchers links the medications to a 4.6 times higher risk of death and a significant increase in cancer cases among regular pill users.<br /><br />The results, published February 27 by the open-access online journal BMJ Open, cast a shadow over a growing segment of the pharmaceutical industry that expanded by 23 percent in the United States from 2006 to 2010 and generated about $2 billion in annual sales.<br /><br /><b>The possible health hazards</b><br /><br />"What our study shows is that sleeping pills are hazardous to your health and might cause death by contributing to the occurrence of cancer, heart disease and other ailments," said author Daniel F. Kripke, MD, of the Viterbi Family Sleep Center at Scripps Health in San Diego.<br /><br />The research is the first to show that eight of the most commonly used hypnotic drugs were associated with increased hazards of mortality and cancer, including the popularly prescribed medications zolpidem (known by the brand name Ambien) and temazepam (also known as Restoril), Dr. Kripke said. Those drugs had been thought to be safer than older hypnotics because of their shorter duration of action.<br /><br />Study participants who took sleeping pills were matched with control patients of similar ages, gender and health who received no hypnotics in order to eliminate the possibility that other factors led to the results.<br /><br />"We tried every practical strategy to make these associations go away, thinking that they could be due to use by people with more health problems, but no matter what we did the associations with higher mortality held," said co-author Robert D. Langer, MD, MPH, of the Jackson Hole Center for Preventive Medicine in Jackson, Wyoming.<br /><br />Even among patients who were prescribed 1 to 18 sleeping pills per year, the risk of death was 3.6 times higher than among similar participants who did not take the medica-tions. The study looked at patients aged 18 years and older, and found the increased risk in all age groups.<br /><b><br />Sleeping pills and cancer</b><br /><br />Rates of new cancers were 35 percent higher among patients who were prescribed at least 132 hypnotic doses a year as compared with those who did not take the drugs.<br /><br />Using data stored in an electronic medical record that has been in place for more than a decade, the researchers obtained information on almost 40,000 patients cared for by a large integrated health system in the northeastern United States.<br /><br />The study included 10,531 sleeping pill users who were prescribed the medications for an average of 2.5 years and 23,674 control participants who were not prescribed the drugs. Information came from outpatient clinic visits conducted between Jan. 1, 2002, and Sept. 30, 2006.<br /><br />"It is important to note that our results are based on observational data, so even though we did everything we could to ensure their validity, it's still possible that other factors explain the associations," said co-author Lawrence E. Kline, DO, who is medical director of the Viterbi Family Sleep Center. "We hope our work will spur additional research in this area using information from other populations."<br /><br /><b><br />Alternatives to medication</b><br /><br />The BMJ Open report should prompt physicians to consider alternatives to hypnotic medications, Dr. Kline said.<br /><br />Clinicians at the Viterbi Family Sleep Center focus on cognitive therapy that teaches patients to better understand the nature of sleep. For example, some people suffering from insomnia might require less than the eight hours of sleep commonly recommended for each night.<br /><br />Patients also can benefit from practicing good sleeping habits and relaxation, as well as taking advantage of the body's natural clock, which is driven by the rising and setting of the sun, Dr. Kline said. "Understanding how to use the circadian rhythm is a very powerful tool that doesn't require a prescription," he said.<br /><br />When insomnia results from emotional problems such as depression, doctors should treat the psychological disorder rather than prescribe sleeping pills that could prove to be harmful, Dr. Kripke said.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-31736570726486499132012-02-29T08:51:00.000-08:002012-03-03T17:31:05.589-08:00Eat Your Broccoli: Sulforaphane Prevents CancerΩ<br /><br /><div class="separator" style="clear: both; text-align: center;"><a href="http://images.sciencedaily.com/2012/02/120228140555-large.jpg" imageanchor="1" style="margin-left:1em; margin-right:1em"><img border="0" height="410" width="604" src="http://images.sciencedaily.com/2012/02/120228140555-large.jpg" /></a></div><br /><br />Researchers in the Linus Pauling Institute at Oregon State University have discovered yet another reason why the "sulforaphane"compound in broccoli and other cruciferous vegetables is so good for you -- it provides not just one, but two ways to prevent cancer through the complex mechanism of epigenetics.<br /><br />Epigenetics, an increasing focus of research around the world, refers not just to our genetic code, but also to the way that diet, toxins and other forces can change which genes get activated, or "expressed." This can play a powerful role in everything from cancer to heart disease and other health issues.<br /><br />Sulforaphane was identified years ago as one of the most critical compounds that provide much of the health benefits in cruciferous vegetables, and scientists also knew that a mechanism involved was histone deacetylases, or HDACs. This family of enzymes can interfere with the normal function of genes that suppress tumors.<br /><br />HDAC inhibitors, such as sulforaphane, can help restore proper balance and prevent the development of cancer. This is one of the most promising areas of much cancer research. But the new OSU studies have found a second epigenetic mechanism, DNA methylation, which plays a similar role.<br /><br />"It appears that DNA methylation and HDAC inhibition, both of which can be influenced by sulforaphane, work in concert with each other to maintain proper cell function," said Emily Ho, an associate professor in the Linus Pauling Institute and the OSU College of Public Health and Human Sciences. "They sort of work as partners and talk to each other."<br /><br />This one-two punch, Ho said, is important to cell function and the control of cell division -- which, when disrupted, is a hallmark of cancer.<br /><br />"Cancer is very complex and it's usually not just one thing that has gone wrong," Ho said. "It's increasingly clear that sulforaphane is a real multi-tasker. The more we find out about it, the more benefits it appears to have."<br /><br />DNA methylation, Ho said, is a normal process of turning off genes, and it helps control what DNA material gets read as part of genetic communication within cells. In cancer that process gets mixed up. And of considerable interest to researchers is that these same disrupted processes appear to play a role in other neurodegenerative diseases, including cardiovascular disease, immune function, neurodegenerative disease and even aging.<br /><br />The influence of sulforaphane on DNA methylation was explored by examining methylation of the gene cyclinD2.<br /><br />This research, which was published in the journal Clinical Epigenetics, primarily studied the effect on prostate cancer cells. But the same processes are probably relevant to many other cancers as well, researchers said, including colon and breast cancer.<br /><br />"With these processes, the key is balance," Ho said. "DNA methylation is a natural process, and when properly controlled is helpful. But when the balance gets mixed up it can cause havoc, and that's where some of these critical nutrients are involved. They help restore the balance."<br /><br />Sulforaphane is particularly abundant in broccoli, but also found in other cruciferous vegetables such as cauliflower and kale. Both laboratory and clinical studies have shown that higher intake of cruciferous vegetables can aid in cancer prevention.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-72922357866661948602012-02-28T13:58:00.000-08:002012-03-03T17:31:05.693-08:00Excess Fat May Be "Protective" in Seniors Over 85Ω<br /><br /><b><i>Surprising TAU research finds obesity can decrease risk of mortality in people over 85 years of age</i></b><br /><br /><br />Obesity is considered the leading preventable cause of death worldwide — until you reach old age, that is. Though obesity increases the risk of an early death, shaving an average of six to seven years off a person's lifespan, Tel Aviv University researchers have found that this trend may reverse itself after the age of 85. In these people, excess fat seems to have a "protective" effect, decreasing the risk of death when compared to those who are considered at a normal body weight.<br /><br />When we reach a very old age, some of the factors that affect mortality in younger people may no longer be significant, explain Prof. Jiska Cohen-Mansfield and Rotem Perach of the Herczeg Institute on Aging and the Sackler Faculty of Medicine. <br /><br />Heavier people have lower rates of osteoporosis, which could decrease incidences of falls and subsequent injury. Obesity could also provide excess energy storage in times of trauma or stress, or prolong the period of weight loss caused by a decrease in appetite, a common occurrence as people near death.<br /><br />This research was recently published in the Journal of Aging Research.<br /><br /><b>The survival effect</b><br /><br />Research has consistently shown that people who are underweight in their old age have a higher mortality risk. But until now, the protective impact of obesity on mortality in this same age group has been unexplored.<br /><br />The study was based on data collected as part of the Cross Sectional and Longitudinal Aging Study (CALAS), which included 1,349 people between the ages of 75-94. Participants were asked basic questions about their height and weight, age, gender, family, education, socioeconomic status, and smoking history. Two decades after the data was first collected, the researchers completed a mortality analysis on the original sample. During the course of these 20 years, 95 percent of the participants had died, leaving 59 subjects still living.<br /><br />Obesity continued to be a predictor of death for those aged 75-84, notes Prof. Cohen-Mansfield. But past the age of 85, participants who were in the obese category were not only at lower risk of death than their underweight peers, but also appeared to be less at risk than those who had a normal weight as well.<br /><br />There is a "selective survival" rate at play, say the researchers. Often, obese people die early in life due to obesity-related illnesses. So those who survive to old age could simply be more resilient. The same principle may be true of other factors, such as smoking.<br /><br /><b>Life at a cost</b><br /><br />Though the findings are surprising, Prof. Cohen-Mansfield points out that obesity only has a protective effect when it comes to mortality. Quality of life, she warns, is another matter. "Though obese people over the age of 85 may be less at risk of death, they may suffer more from obesity-related illnesses," she says. "There are other factors to consider, such as pain, multiple ailments, and mobility."<br /><br />To read the article, see:<br /><a href="http://www.hindawi.com/journals/jar/2011/765071/">http://www.hindawi.com/journals/jar/2011/765071/</a><br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-53391355743263416342012-02-27T20:09:00.000-08:002012-03-03T17:26:40.618-08:00Spirulina Health Benefit: Nutritional Supplement Dosage and Side Effects<div dir="ltr" style="text-align: left;" trbidi="on"><div class="MsoNormal" style="margin: 0in 0in 10pt;"><i style="mso-bidi-font-style: normal;"><span style="font-family: "Times New Roman", "serif";">Health enthusiasts have discovered that algae found in lakes and ponds are powerful food supplements; these contain several noteworthy beneficial substances that promise to enhance health. This article provides information about the ideal dosage, side effects and nutrition facts about spirulina and its health benefits including aiding in weight loss </span></i></div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: right; margin-left: 1em; text-align: right;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEih0xAwNG-VUDH_edplWIW_q2r8CXFJVbzqcgosr1zPMVMqgyY4I7PAXG1lg-3RkIyHCW6ik2DjvD83CC9eon1sO2eFcHq9_kUP-OZCNZ00iZcdyrvpiPyKH5tVxth4TQBY-vkFMZDklw7r/s1600/120px-Spirulina_tablets.jpg" imageanchor="1" style="clear: right; cssfloat: right; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEih0xAwNG-VUDH_edplWIW_q2r8CXFJVbzqcgosr1zPMVMqgyY4I7PAXG1lg-3RkIyHCW6ik2DjvD83CC9eon1sO2eFcHq9_kUP-OZCNZ00iZcdyrvpiPyKH5tVxth4TQBY-vkFMZDklw7r/s1600/120px-Spirulina_tablets.jpg" uda="true" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;"><strong>Spirulina Supplements for </strong><br /><strong>bad breath</strong></td></tr></tbody></table><div class="MsoNormal" style="margin: 0in 0in 10pt;"><b style="mso-bidi-font-weight: normal;"><span style="font-family: "Times New Roman", "serif";">What is Spirulina?</span></b></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><span style="font-family: "Times New Roman", "serif";">Spirulina or blue-green algae is a single celled microorganism that resembles a bacterium. Spirulina is loaded with chlorophyll, thus it turns the lakes and ponds where it grows a deep blue-green.</span></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><b style="mso-bidi-font-weight: normal;"><span style="font-family: "Times New Roman", "serif";">Spirulina Nutrition Facts</span></b></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><span style="font-family: "Times New Roman", "serif";">Spirulina is packed with plant pigment chlorophyll, which is known to exert several significant health benefits. Also, contains proteins, <a href="http://supplementsandnutrients.blogspot.in/2011/10/health-benefits-of-vitamin-b12-vitamin.html">vitamin B12</a>, folic acid and carotenoids.</span></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><b style="mso-bidi-font-weight: normal;"><span style="font-family: "Times New Roman", "serif";">Benefits of Spirulina: Spirulina Health Benefits</span></b></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><span style="font-family: "Times New Roman", "serif";">Spirulina has been used medicinally for thousands of years in china. This alga claims to proffer a range of noteworthy health benefits:</span></div><div class="MsoListParagraphCxSpFirst" style="margin: 0in 0in 0pt 0.5in; mso-list: l0 level1 lfo1; text-indent: -0.25in;"><span style="font-family: Symbol; mso-bidi-font-family: Symbol; mso-fareast-font-family: Symbol;"><span style="mso-list: Ignore;">·<span style="font: 7pt "Times New Roman";"> </span></span></span><span style="font-family: "Times New Roman", "serif";">The high chlorophyll content of the alga helps <a href="http://zerodisease.blogspot.in/2012/02/home-remedies-for-bad-breath-get-rid-of.html">battle bad breath effectively</a>; in fact most breath fresheners available in the market are composed of spirulina.</span></div><div class="MsoListParagraphCxSpMiddle" style="margin: 0in 0in 0pt 0.5in; mso-list: l0 level1 lfo1; text-indent: -0.25in;"><span style="font-family: Symbol; mso-bidi-font-family: Symbol; mso-fareast-font-family: Symbol;"><span style="mso-list: Ignore;">·<span style="font: 7pt "Times New Roman";"> </span></span></span><span style="font-family: "Times New Roman", "serif";">This microorganism is known to boost energy levels and <a href="http://zerodisease.blogspot.in/2012/02/managing-chronic-fatigue-syndrome-with.html">dispel fatigue</a> and weariness</span></div><div class="MsoListParagraphCxSpMiddle" style="margin: 0in 0in 0pt 0.5in; mso-list: l0 level1 lfo1; text-indent: -0.25in;"><span style="font-family: Symbol; mso-bidi-font-family: Symbol; mso-fareast-font-family: Symbol;"><span style="mso-list: Ignore;">·<span style="font: 7pt "Times New Roman";"> </span></span></span><span style="font-family: "Times New Roman", "serif";">It is enhances the functioning of the liver considerably and is beneficial in the <a href="http://liver-disease.factoidz.com/hepatitis-d-causes-and-symptoms-treating-hepatitis-d-naturally/">management of hepatitis</a>.</span></div><div class="MsoListParagraphCxSpLast" style="margin: 0in 0in 10pt 0.5in; mso-list: l0 level1 lfo1; text-indent: -0.25in;"><span style="font-family: Symbol; mso-bidi-font-family: Symbol; mso-fareast-font-family: Symbol;"><span style="mso-list: Ignore;">·<span style="font: 7pt "Times New Roman";"> </span></span></span><span style="font-family: "Times New Roman", "serif";">Spirulina <a href="http://shwetashah.suite101.com/immune-boosting-foods-improve-immune-response-naturally-a276429">perks up immune mechanism</a> and helps prevent <a href="http://drshwetaushah.hubpages.com/hub/Limit-Salt-intake-Diet-to-control-hypertension-and-improve-heart-health">cardio-vascular and heart disorders</a> and <a href="http://shwetashah.suite101.com/breast-cancer-prognosis-foods-to-fight-cancer-a219223">cancers</a>.</span></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><b style="mso-bidi-font-weight: normal;"><span style="font-family: "Times New Roman", "serif";">Spirulina and Weight Loss</span></b></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><span style="font-family: "Times New Roman", "serif";">There have been a few claims of spirulina <a href="http://zerodisease.blogspot.in/2011/06/lose-weight-quickly-with-oats-health.html">helping weight loss</a> and weight management; however, there is no conclusive proof. Spirulina, along with a balanced and healthy diet, a regular exercise routine and a consistent lifestyle pattern can help maintain an ideal body weight.</span></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><b style="mso-bidi-font-weight: normal;"><span style="font-family: "Times New Roman", "serif";">Spirulina Powder: Spirulina Dose</span></b></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><span style="font-family: "Times New Roman", "serif";">Spirulina is available in the form of powder, capsule, tincture and tablets. By and large, spirulina is recommended for those who complain of chronic and obstinate halitosis or offensive breath. Experts recommend: mix 1 teaspoon of spirulina powder in one glass of water. Use this as a gargle as well as a drink, daily. You could also take a tablet or capsule twice every day.</span></div><table cellpadding="0" cellspacing="0" class="tr-caption-container" style="float: right; margin-left: 1em; text-align: right;"><tbody><tr><td style="text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0FXIcIkeGQ47GfFnbqB5tglDUfYmttNIMA_qCSmsfhIEYzz96behr9a1utVl0iFDVjgbDwmnF59pxEurcRdLX8BigyTjJbjT81vzvs5iTgSqyvqP__E1FL8WqrCYHSTGQU4-o8R4rbYuH/s1600/120px-Spirul2.jpg" imageanchor="1" style="clear: right; cssfloat: right; margin-bottom: 1em; margin-left: auto; margin-right: auto;"><img border="0" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg0FXIcIkeGQ47GfFnbqB5tglDUfYmttNIMA_qCSmsfhIEYzz96behr9a1utVl0iFDVjgbDwmnF59pxEurcRdLX8BigyTjJbjT81vzvs5iTgSqyvqP__E1FL8WqrCYHSTGQU4-o8R4rbYuH/s1600/120px-Spirul2.jpg" uda="true" /></a></td></tr><tr><td class="tr-caption" style="text-align: center;"><strong>Spirulina can be contaminated</strong><br /><strong>with mercury or lead</strong></td></tr></tbody></table><div class="MsoNormal" style="margin: 0in 0in 10pt;"><b style="mso-bidi-font-weight: normal;"><span style="font-family: "Times New Roman", "serif";">Spirulina Side Effects</span></b></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><span style="font-family: "Times New Roman", "serif";">No adverse effects have been reported after consuming recommended doses of spirulina. However, some people have complained of slight nausea and vomiting or <a href="http://zerodisease.blogspot.in/2011/10/home-remedies-for-diarrhea-tips-to.html">diarrhea</a>. In case this occurs, lower your dose or stop the supplementation for a few days. Also, always take the supplement after meals; it reduces the chances of a gastric upset and <a href="http://drshwetaushah.hubpages.com/hub/gassystomachhomeremedies">gastric distention</a>. On the whole, spirulina is considered to be a very safe supplement.</span></div><div class="MsoNormal" style="margin: 0in 0in 10pt;"><span style="font-family: "Times New Roman", "serif";">Importantly, do not harvest your own spirulina from a pond or lake; these colonies of algae may be contaminated with sewage or industrial waste and could contain concentrated levels of lead, cadmium, mercury or other lethal toxins.</span></div></div>maestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-82535055007035961142012-02-27T14:01:00.000-08:002012-03-03T17:31:05.797-08:00Low levels of omega-3 fatty acids may cause memory problemsΩ<br /><br />A diet lacking in omega-3 fatty acids, nutrients commonly found in fish, may cause your brain to age faster and lose some of its memory and thinking abilities, according to a study published in the February 28, 2012, print issue of Neurology®, the medical journal of the American Academy of Neurology. Omega-3 fatty acids include the nutrients called docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA).<br /><br />"People with lower blood levels of omega-3 fatty acids had lower brain volumes that were equivalent to about two years of structural brain aging," said study author Zaldy S. Tan, MD, MPH, of the Easton Center for Alzheimer's Disease Research and the Division of Geriatrics, University of California at Los Angeles.<br /><br />For the study, 1,575 people with an average age of 67 and free of dementia underwent MRI brain scans. They were also given tests that measured mental function, body mass and the omega-3 fatty acid levels in their red blood cells.<br /><br />The researchers found that people whose DHA levels were among the bottom 25 percent of the participants had lower brain volume compared to people who had higher DHA levels. Similarly, participants with levels of all omega-3 fatty acids in the bottom 25 percent also scored lower on tests of visual memory and executive function, such as problem solving and multi-tasking and abstract thinking.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-73537249033063905792012-02-27T13:29:00.000-08:002012-03-03T17:31:05.902-08:00Research offers insight to how fructose causes obesity and other illnessΩ<br /><br />A group of scientists from across the world have come together in a just-published study that provides new insights into how fructose causes obesity and metabolic syndrome, more commonly known as diabetes.<br /><br />In this study which was performed in lab animals, researchers found that fructose can be metabolized by an enzyme that exists in two forms. One form appears to be responsible for causing how fructose causes fatty liver, obesity, and insulin resistance. The other form may actually protect animals from developing these features in response to sugar. These studies may provide important insights into the cause of the prediabetic condition known as "metabolic syndrome", which currently affects more than one-quarter of adults in the United States.<br /><br />The study, "Opposing effects of fructokinase C and A isoforms on fructose-induced metabolic syndrome in mice" was published today in the journal Proceedings of the National Academy of Sciences. Richard Johnson, MD, the senior author of the study and Chief of the Division of Renal Diseases and Hypertension at the University of Colorado School of Medicine said the findings are significant because we now have a better understanding of how fructose causes obesity and other illnesses.<br /><br />"These studies provide new insights into how fructose may contribute to the development of obesity and diabetes. In particular, the identification of contrasting roles for two enzymes that are involved in fructose metabolism was surprising and could be important in understanding why some individuals may be more sensitive to the metabolic effects of fructose than others."<br /><br />Previous research has shown that fructose intake in added sugars such as sucrose and high fructose corn syrup is strongly linked to the epidemic rise in obesity and nonalcoholic fatty liver disease. Fructose intake also causes features of metabolic syndrome in laboratory animals and humans. It is known to cause visceral (organ) fat accumulation and insulin resistance compared to starch based diets even when calories are kept even.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-82768472519733301282012-02-24T06:29:00.000-08:002012-03-03T17:31:06.021-08:00Citrus Fruits May Help Women Reduce Risk Of StrokeΩ<br /><br />Eating citrus fruits, especially oranges and grapefruit, because of the flavonone they contain, may lower women's risk of developing clot-associated or ischemic stroke, according to a new study led by Norwich Medical School of the University of East Anglia in the UK that was published online in Stroke: Journal of the American Heart Association on Thursday.<br /><br />The researchers wanted to examine more closely how consumption of foods containing different classes of flavonoids affected the risk of stroke.<br /><br />Flavonoids are a group of compounds found in fruits, vegetables, dark chocolate and red wine.<br /><br />Study lead author and professor of nutrition at Norwich Medical School, Dr Aedín Cassidy, told the press:<br /><br />"Studies have shown higher fruit, vegetable and specifically vitamin C intake is associated with reduced stroke risk."<br /><br />A stroke is where part of the brain shuts down because of loss of blood supply, caused either by a blockage or embolism that stops the blood flow (ischemia), or due to leakage caused by a hemorrhage.<br /><br />Cassidy said flavonoids are thought to provide some protection against stroke by improving blood vessel function and reducing inflammation, among other things.<br /><br />For their study, Cassidy and colleagues examined data from the Nurse's Health Study. Based in the US, this is one of the largest and longest running investigations of factors that influence women's health. It started in 1976 and expanded in 1989.<br /><br />The researchers looked at 14 years of follow-up data completed by 69,622 female participants who every four years had reported their dietary intake, including details of the fruits and vegetables they consumed.<br /><br />They looked for links between the six major subclasses of flavonoids commonly present in the American diet and risk of ischemic, hemorrhagic and total stroke.<br /><br />The six major subclasses they examined were: flavonones, anthocyanins, flavon-3-ols, flavonoid polymers, flavonols and flavones.<br /><br />Since we already know that each subclass has a different biological effect, the researchers did not expect to find any strong beneficial links between total flavonoid consumption and stroke risk.<br /><br />But they did find a strong link between high consumption of flavonones in citrus fruits and reduced stroke risk: women who consumed the most showed a 19% lower risk of ischemic stroke compared to women who ate the least amounts of flavonones in citrus fruits.<br /><br />In this study, oranges and orange juice (82%) and grapefruit and grapefruit juice (14%) had the highest amounts of flavonones. But the researchers said if you are looking to increase your intake, then go for the fruit rather than the juice, because the latter tends to be accompanied by high amounts of sugar.<br /><br />While previous studies have shown links between various foods and protection against both kinds of stroke, and this study further informs the field, the researchers said we still need to get a better understanding about why the link occurs, and that has to come from further research.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-71128299584746910322012-02-22T13:59:00.000-08:002012-03-03T17:31:06.206-08:00World of Warcraft Boosts Cognitive Functioning In Some Older AdultsΩ<br /><br />For some older adults, the online video game World of Warcraft (WoW) may provide more than just an opportunity for escapist adventure. Researchers from North Carolina State University have found that playing WoW actually boosted cognitive functioning for older adults – particularly those adults who had scored poorly on cognitive ability tests before playing the game.<br /><br />“We chose World of Warcraft because it has attributes we felt may produce benefits – it is a cognitively challenging game in a socially interactive environment that presents users with novel situations,” says Dr. Anne McLaughlin, an assistant professor of psychology at NC State and co-author of a paper on the study. “We found there were improvements, but it depended on each participant’s baseline cognitive functioning level.”<br /><br />Researchers from NC State’s Gains Through Gaming laboratory first tested the cognitive functioning of study participants, aged 60 to 77, to set a baseline. The researchers looked at cognitive abilities including spatial ability, memory and how well participants could focus their attention.<br /><br />An “experimental” group of study participants then played WoW on their home computers for approximately 14 hours over the course of two weeks, before being re-tested. A “control” group of study participants did not play WoW, but were also re-tested after two weeks.<br /><br />Comparing the cognitive functioning test scores of participants in the experimental and control groups, the researchers found the group that played WoW saw a much greater increase in cognitive functioning, though the effect varied according to each participant’s baseline score.<br /><br />“Among participants who scored well on baseline cognitive functioning tests, there was no significant improvement after playing WoW – they were already doing great,” McLaughlin says. “But we saw significant improvement in both spatial ability and focus for participants who scored low on the initial baseline tests.” Pre- and post-game testing showed no change for participants on memory.<br /><br />“The people who needed it most – those who performed the worst on the initial testing – saw the most improvement,” says Dr. Jason Allaire, an associate professor of psychology at NC State and co-author of a paper on the study.<br /><br />The paper, “Individual differences in response to cognitive training: Using a multi-modal, attentionally demanding game-based intervention for older adults,” is published online in Computers in Human Behavior. Lead author of the paper is Laura Whitlock, an NC State Ph.D. student. The research was supported by NC State’s College of Humanities and Social Sciences.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-54391852098657714742012-02-21T11:45:00.000-08:002012-03-03T17:31:06.308-08:00Are all carbs bad?I eat a lot of carbs: fruits, vegetables, beans and whole grains mostly. I need them to feel full. Some of my friends (and my wife) advocate a low carb, high protein diet, but I have chosen to eat very little meat, cheese and eggs for health reasons. If I give up carbs, that pretty much leaves only fish, of which I eat a lot, but that brings its own health issues. <br /><br /> I 'm clearly not going to lose weight on my chosen regimen, but how bad are carbs really? <br /><br /><strong><a href="http://articles.mercola.com/sites/articles/archive/2012/02/18/pasta-not-bacon-makes-you-fat-but-how.aspx?e_cid=20120218_DNL_art_2"><br />The same article I quoted on the dangers of fructose was actually mostly about the dangers of carbs:</a></strong><br /><br /><blockquote><br /> Overconsumption of carbs is the primary driving factor for insulin resistance and type 2 diabetes. Unfortunately, the conventional medical wisdom has unwisely been extolling the virtues of carbohydrates for years, even placing them as the "foundation" of the highly flawed food pyramid.<br /><br /> If you are seeking to lose weight and optimize your health, foods like bread, rice and pasta should comprise very low percentages of your diet. Virtually anyone who bought into these high-carb, low-fat dietary recommendations has likely struggled with their weight and health, wondering what they're doing wrong.<br /><br /> The problem is that overeating carbohydrates can prevent a higher percentage of fats from being used for energy, and lead to an increase in fat production and storage. It also raises your insulin levels, which in short order can cause insulin resistance, followed by diabetes. Insulin resistance is also at the heart of virtually every chronic disease known to modern man.<br /><br />Your Body Stores Excess Carbs as Fat<br /><br /> Your body has a limited capacity to store excess carbohydrates. This is one of the reasons why elevated blood sugar follows their overconsumption. One of the ways your body avoids dangerously elevated blood sugar is through converting those excess carbohydrates into excess body fat primarily in your belly. The way it works is that any carbohydrates not immediately used by your body are stored in the form of glycogen (a long string of glucose molecules linked together). Your body has two storage sites for glycogen: your liver and your muscles. Once the glycogen levels are filled in both your liver and muscles, excess carbohydrates are converted into fat and stored in your adipose, that is, fatty, tissue.<br /><br /> So, although carbohydrates are "fat-free," this is misleading because excess carbohydrates end up as excess fat. Puffed rice, in fact, is capable of making your blood sweeter than white sugar, due to the fact that it is higher on the glycemic index – all the more reason why refined grains are "hidden sugar," and sugar is in many ways "hidden fat."<br /><br /> But that's not the worst of it. Any meal or snack high in carbohydrates will also generate a rapid rise in blood glucose. To adjust for this rapid rise, your pancreas secretes insulin into your bloodstream, which then lowers your levels of blood glucose. The problem is that insulin is essentially a storage hormone, evolved to put aside excess carbohydrate calories in the form of fat in case of future famine. So the insulin that's stimulated by excess carbohydrates aggressively promotes the accumulation of body fat!<br /><br /> In other words, when you eat too much sugar, bread, pasta, and any other grain products, you're essentially sending a hormonal message, via insulin, to your body that says "store more fat." This is actually a highly beneficial response in certain scenarios such as when calories are very scarce. This provides a major survival advantage -- but for nearly everyone reading this, having insufficient calories is not an issue, so this protective mechanism actually sabotages your health.<br /><br /> Additionally, increased insulin levels also:<br /><br /> * Make it virtually impossible for you to use your own stored body fat for energy.<br /> * Suppress two important hormones: glucagon and growth hormone. Glucagon promotes the burning of fat and sugar. Growth hormone is used for muscle development and building new muscle mass.<br /> * Increases hunger: As blood sugar increases following a carbohydrate meal, insulin rises with the eventual result of lower blood sugar. This results in hunger, often only a couple of hours (or less) after the meal, in a vicious endocrine rollercoaster that takes us from meal to compulsive meal without ever feeling satisfied.<br /><br /> So, all in all, the excess carbohydrates in your diet can not only make you fat, they can make sure you stay fat. Cravings, usually for sweets, are frequently part of this cycle, leading you to resort to snacking, often on more carbohydrates. Not eating can make you feel ravenous shaky, moody and ready to "crash." If the problem is chronic, you never get rid of that extra stored fat, and your energy and overall health is adversely affected.<br /></blockquote><br /><br />I've cut out rice (except on sushi), potatoes and white bread (mostly.) I've cut back on pastry (although I need to do even better there.) So how am I doing carb wise? Not bad, according to the <strong><a href="http://www.hsph.harvard.edu/nutritionsource/what-should-you-eat/carbohydrates/">Harvard School of Public Health:</a></strong><br /><br /><br /><br /><blockquote>Don't be misled by fad diets that make blanket pronouncements on the dangers of carbohydrates. They provide the body with fuel it needs for physical activity and for proper organ function, and they are an important part of a healthy diet. But some kinds of carbohydrates are far better than others.<br /><br />Choose the best sources of carbohydrates—whole grains (the less processed, the better), vegetables, fruits and beans—since they promote good health by delivering vitamins, minerals, fiber, and a host of important phytonutrients. Skip the easily digested refined carbohydrates from refined grains—white bread, white rice, and the like— as well as pastries.<br /></blockquote><br />They are pretty positive on fruits as well:<br /><br /><img alt="" src="http://www.hsph.harvard.edu/nutritionsource/images/healthy-eating-plate-565.jpg" title="bb" class="alignnone" width="565" height="442" /><br /><br />Eating whole grain carbs may actually be good for me:<br /><br /><br /><blockquote><strong>Study Confirms Health Benefits of Whole Grains</strong><br /><br />A diet high in whole grain foods is associated with a significantly lower risk of developing cardiovascular disease, including heart disease and stroke, according to an analysis conducted by researchers at Wake Forest University School of Medicine.<br /><br />“Consuming an average of 2.5 servings of whole grains each day is associated with a 21 percent lower risk of cardiovascular disease compared to consuming only 0.2 servings,” said Philip Mellen, M.D., lead author and an assistant professor of internal medicine. “These findings suggest that we should redouble our efforts to encourage patients to include more of these foods in their diets.”<br /><br />These results were published on line in Nutrition, Metabolism & Cardiovascular Diseases and will appear in a future print issue.<br /><br />The findings are based on an analysis of seven studies involving more than 285,000 people. By combining the data from these seven studies, researchers were able to detect effects that may not have shown up in each individual study. The studies were conducted between 1966 and April 2006.<br /><br />Mellen said the findings are consistent with earlier research, but that despite abundant evidence about the health benefits of whole grains, intake remains low. A nutrition survey conducted between 1999 and 2000 found that only 8 percent of U.S. adults consumed three or more servings of whole grain per day and that 42 percent of adults ate no whole grains on a given day.<br /><br />“Many consumers and health professionals are unaware of the health benefits of whole grains,” said Mellen.<br /><br />A grain is “whole” when the entire grain seed is retained: the bran, germ and the endosperm. The bran and germ components are rich in fiber, vitamins, minerals, antioxidants, and healthy fats. These are the parts removed in the refining process, leaving behind the energy-dense but nutrient-poor endosperm portion of the grain. Examples of whole grain foods include wild rice, popcorn, oatmeal, brown rice, barley, wheat berries and flours such as whole wheat.<br /><br />In addition to protecting against cardiovascular disease, which accounts for one-third of deaths worldwide, there is evidence that whole grains also project against diabetes and other chronic conditions.<br /><br />“Years ago, scientists hypothesized that the higher rates of chronic diseases we have in the West, including heart disease, are due, in part, to a diet full of processed foods,” Mellen said. “Subsequent studies have born that out – especially with whole grains. Greater whole grain intake is associated with less obesity, diabetes, high blood pressure, and high cholesterol – major factors that increase the risk for heart disease and stroke.”<br /><br />According to nutritionists, consumers should look for “100 percent whole grain” on food labels or look for specific types of whole-grain flour as the main ingredient, such as “whole wheat.” </blockquote><br /><br />Also: <br /><br /><blockquote><br />Cardiovascular Disease<br /><br />Eating whole instead of refined grains substantially lowers total cholesterol, low-density lipoprotein (LDL, or bad) cholesterol, triglycerides, and insulin levels. Any of these changes would be expected to reduce the risk for cardiovascular disease. In the Harvard-based Nurses' Health Study, women who ate 2 to 3 servings of whole-grain products (mostly bread and breakfast cereals) each day were 30 percent less likely to have a heart attack or die from heart disease over a 10-year period than women who ate less than 1 serving per week (1). A recent meta-analysis of seven major studies showed that cardiovascular disease (heart attack, stroke, or the need for a procedure to bypass or open a clogged artery) was 21 percent less likely in people who ate 2.5 or more servings of whole-grain foods a day compared with those who ate less than 2 servings a week (2).<br /><br />Type 2 Diabetes<br /><br />In a study of more than 160,000 women whose health and dietary habits were followed for up to 18 years, those who averaged 2 to 3 servings of whole grains a day were 30 percent less likely to have developed type 2 diabetes than those who rarely ate whole grains (3). When the researchers combined these results with those of several other large studies, they found that eating an extra 2 servings of whole grains a day decreased the risk of type 2 diabetes by 21 percent.<br /><br />Cancer<br /><br />The data on cancer are mixed, with some studies showing a protective effect and others showing none (4). A large, five-year study among nearly 500,000 men and women suggests that eating whole grains, but not dietary fiber, offers modest protection against colorectal cancer (5, 6).<br /><br />Digestive Health<br /><br />By keeping the stool soft and bulky, the fiber in whole grains helps prevent constipation, a common, costly, and aggravating problem. It also helps prevent diverticular disease (the development of tiny pouches inside the colon that are easily irritated and inflamed) by decreasing pressure in the intestines.<br /><br />Staying Alive<br /><br />An intriguing report from the Iowa Women's Health Study linked whole-grain consumption with fewer deaths from noncardiac, noncancer causes. Compared with women who rarely or never ate whole-grain foods, those who had at least two or more servings a day were 30 percent less likely to have died from an inflammation-related condition over a 17-year period (7). <br /></blockquote><br /><br />and specifically: <br /><strong><br />1. <a href="http://healthnewsreport.blogspot.com/2010/06/replacing-white-rice-with-brown-rice.html">Brown Rice</a><br />2. <a href="http://healthnewsreport.blogspot.com/2008/12/jons-health-tips-oatmeal.html"> Oatmeal</a></strong><br /><br />My conclusion - I will try even harder to avoid refined grains, but not worry at all about consuming high fiber carbs.maestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-59506577972222994192012-02-20T09:58:00.000-08:002012-03-03T17:31:06.411-08:00Fruits and Fructose - Good or Bad?Ω<br /><br />I eat a lot of fruit: raisins, grapes, blueberries, apples, strawberries, bananas, orange juice and tomatoes (yes, tomatoes are a fruit.) I always thought they were <strong> <a href="http://www.squidoo.com/nutritional-guide-to-fruits">good for me </a></strong> (well orange juice in great moderation, only to enhance the benefits of green/white tea.) <br /><br />Lots of research highlights the benefits:<br /><br />Here are just a few examples:<br /><br /><strong>1. <a href="http://healthnewsreport.blogspot.com/2012/02/apples.html">Apples</a></strong><br /><br />2. Blueberries <br /><a href="http://healthnewsreport.blogspot.com/2011/06/blueberries-help-build-strong-bones.html">Blueberries Help Build Strong Bones</a><br /><a href="http://healthnewsreport.blogspot.com/2011/04/blueberries-may-inhibit-development-of.html">Blueberries may inhibit development of fat cells</a><br /><a href="http://healthnewsreport.blogspot.com/2011/07/blueberries-cup-day-may-keep- research_29.html">Blueberries: a Cup a Day May Keep Cancer Away</a><br /><a href="http://healthnewsreport.blogspot.com/2011/05/blueberrys-positive-effects-on.html">Blueberry’s positive effects on cholesterol</a><br /><br />3. Strawberries<br /><a href="http://healthnewsreport.blogspot.com/2011/06/strawberries-boost-red-blood-cells.html">Strawberries Boost Red Blood Cells</a><br /><a href="http://healthnewsreport.blogspot.com/2011/06/strawberries-fight-diabetes-and-nervous.html">Strawberries Fight Diabetes and Nervous System Diseases</a><br /><a href="http://healthnewsreport.blogspot.com/2011/04/strawberries-may-slow-precancerous.html">Strawberries may slow precancerous growth</a><br /><a href="http://healthnewsreport.blogspot.com/2011/10/strawberries-protect-stomach-from.html">Strawberries Protect the Stomach from Alcohol</a><br /><br />Even <strong><a href="http://www.fruitsandveggiesmatter.gov/benefits/">the government says fruits are good:</a></strong><br /><br /><br /><blockquote><strong>Almost Everyone Needs to Eat More Fruits and Vegetables</strong><br />A growing body of research shows that fruits and vegetables are critical to promoting good health. To get the amount that's recommended, most people need to increase the amount of fruits and vegetables they currently eat every day. How Many Fruits and Vegetables Do You Need?<br /><br /><strong>Fruits and Vegetables Can Protect Your Health</strong><br />Fruits and vegetables contain essential vitamins, minerals, and fiber that may help protect you from chronic diseases. Compared with people who consume a diet with only small amounts of fruits and vegetables, those who eat more generous amounts as part of a healthful diet are likely to have reduced risk of chronic diseases, including stroke and perhaps other cardiovascular diseases, and certain cancers.<br /></blockquote><br /><br />But <strong><a href="http://articles.mercola.com/sites/articles/archive/2012/02/18/pasta-not-bacon-makes-you-fat-but-how.aspx?e_cid=20120218_DNL_art_2">a recent article </a></strong>sent to me by a reader/friend says quite the opposite:<br /><br /><br /><br /><blockquote>A Word about Fructose (a Common Sugar in Soda, Fruit Juice and More) …<br /><br /> You will want to be very careful about the amount of fructose you consume as part of your carb intake, as it is by far the worst type of sugar there is in terms of both your health and your weight:<br /><br /> * After eating fructose, virtually all of the metabolic burden rests on your liver. <br /> *Fructose is turned into free fatty acids (FFAs), VLDL (the damaging form of cholesterol), and triglycerides, which get stored as fat.<br /> * The fatty acids created during fructose metabolism accumulate as fat droplets in your liver and skeletal muscle tissues, causing insulin resistance and non-alcoholic fatty liver disease (NAFLD). Insulin resistance progresses to metabolic syndrome and type 2 diabetes.<br /> * Fructose is the most lipophilic carbohydrate. In other words, fructose converts to activated glycerol (g-3-p), which is directly used to turn FFAs into triglycerides. The more g-3-p you have, the more fat you store. Glucose simply does not do this.<br /> * Consuming fructose is essentially consuming fat!<br /> * The metabolism of fructose by your liver creates a long list of waste products and toxins, including a large amount of uric acid, which drives up blood pressure and can cause gout.<br /> * Fructose has no effect on the hunger hormone ghrelin and by interfering with your brain's ability to use leptin, results in overeating.<br /><br /> If you want to shed excess pounds, maintain a healthy weight long-term, and RADICALLY reduce (and in many cases virtually eliminate) your risk of diabetes, heart disease and cancer, then get serious about restricting your consumption of fructose to no more than 25 grams per day, with a maximum of 15 grams a day from fresh fruit. If you're already overweight, or have any of these diseases or are at high risk of any of them, then you're probably better off cutting that down to 10-15 grams per day -- fruit included. <br /><br /> If you believe you are an exception to this rule then you can measure your uric acid level. If it is below 5 when you are eating loads of fruit then you are metabolically ok with it, as elevated uric acid levels are a strong indication of fructose toxicity.<br /></blockquote><br /><br />So what should I do?<br /><br />Well this article, <strong><a href="http://lowcarbdiets.about.com/od/nutrition/a/fructosedangers.htm">Fructose: Sweet, But Dangerous,</a> </strong>suggests that fruit isn't really so bad:<br /><br /><br /><blockquote>Fruits and vegetables have relatively small, "normal" amounts of fructose that most bodies can handle quite well... For example, a cup of chopped tomatoes has 2.5 grams of fructose, a can of regular (non-diet) soda supplies 23 grams, and a super-size soda has about 62 grams. </blockquote><br /><br /><strong><a href="http://thepaleodiet.com/wp-content/uploads/2011/04/Fruits-Sugars.html">But this table </a></strong>tells me apples, grapes, and especially raisins, are particularly bad.<br /><br />My conclusion - I'm going to go right on eating most of my fruits but will cut down on raisins, which I use to sweeten my daily oat meal ( the subject of my next, similar, post).maestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-64672858802268071452012-02-20T09:04:00.000-08:002012-03-03T17:31:06.532-08:00Blueberries and Strawberries<a href="http://healthnewsreport.blogspot.com/2011/06/blueberries-help-build-strong-bones.html">Blueberries Help Build Strong Bones</a><br /><a href="http://healthnewsreport.blogspot.com/2011/04/blueberries-may-inhibit-development-of.html">Blueberries may inhibit development of fat cells</a><br /><a href="http://healthnewsreport.blogspot.com/2011/07/blueberries-cup-day-may-keep- research_29.html">Blueberries: a Cup a Day May Keep Cancer Away</a><br /><a href="http://healthnewsreport.blogspot.com/2011/05/blueberrys-positive-effects-on.html">Blueberry’s positive effects on cholesterol</a><br /><br /><br /><a href="http://healthnewsreport.blogspot.com/2011/06/strawberries-boost-red-blood-cells.html">Strawberries Boost Red Blood Cells</a><br /><a href="http://healthnewsreport.blogspot.com/2011/06/strawberries-fight-diabetes-and-nervous.html">Strawberries Fight Diabetes and Nervous System Diseases</a><br /><a href="http://healthnewsreport.blogspot.com/2011/04/strawberries-may-slow-precancerous.html">Strawberries may slow precancerous growth</a><br /><a href="http://healthnewsreport.blogspot.com/2011/10/strawberries-protect-stomach-from.html">Strawberries Protect the Stomach from Alcohol</a>maestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-68765567965978081812012-02-20T08:40:00.000-08:002012-03-03T17:31:06.637-08:00Apples<b>'Apple a day' advice rooted in science</b><br /><br />Everyone has heard the old adage, "an apple a day keeps the doctor away." We all know we should eat more fruit. But why apples? Do they contain specific benefits?<br /><br />According to Dr. Bahram H. Arjmandi, PhD, RD, Margaret A. Sitton Professor and Chair, Department of Nutrition, Food and Exercise Sciences at The Florida State University, apples are truly a "miracle fruit" that convey benefits beyond fiber content. Animal studies have shown that apple pectin and polyphenols in apple improve lipid metabolism and lower the production of pro-inflammatory molecules. Arjmandi's most recent research is the first to evaluate the long-term cardioprotective effects of daily consumption of apple in postmenopausal women. The results of this USDA-funded study will be presented at Experimental Biology 2011 on Tuesday, April 12, at 12:45 pm in Washington, DC.<br /><br />This study randomly assigned 160 women ages 45-65 to one of two dietary intervention groups: one received dried apples daily (75g/day for 1 year) and the other group ate dried prunes every day for a year. Blood samples were taken at 3, 6 and 12-months. The results surprised Dr. Arjmandi, who stated that "incredible changes in the apple-eating women happened by 6 months- they experienced a 23% decrease in LDL cholesterol," which is known as the "bad cholesterol." The daily apple consumption also led to a lowering of lipid hydroperoxide levels and C-reactive protein in those women.<br /><br />"I never expected apple consumption to reduce bad cholesterol to this extent while increasing HDL cholesterol or good cholesterol by about 4%," Arjmandi said. Yet another advantage is that the extra 240 calories per day consumed from the dried apple did not lead to weight gain in the women; in fact, they lost on average 3.3 lbs. "Reducing body weight is an added benefit to daily apple intake" he said. Part of the reason for the weight loss could be the fruit's pectin, which is known to have a satiety effect. The next step in confirming the results of this study is a multi-investigator nationwide study.<br /><br />There is frequently some truth behind our common expressions, and in the case of 'an apple a day,' Dr. Arjmandi has shown that nutrition science backs up the expression. "Everyone can benefit from consuming apples," he said. <br /><br /><span style="font-weight:bold;"><br />An Apple Peel a Day Could Keep Cancer at Bay</span><br /><br />An apple peel a day might help keep cancer at bay, according to Rui Hai Liu, Cornell associate professor of food science, who has identified a dozen compounds -- triterpenoids -- in apple peel that either inhibit or kill cancer cells in laboratory cultures. Three of the compounds have not previously been described in the literature.<br /><br />"We found that several compounds have potent anti-proliferative activities against human liver, colon and breast cancer cells and may be partially responsible for the anti-cancer activities of whole apples," says Liu, who is affiliated with Cornell's Institute of Comparative and Environmental Toxicology and is senior author of the study, which is online and published in the Journal of Agricultural and Food Chemistry.<br /><br />In previous Cornell studies, apples had been found not only to fight cancer cells in the laboratory but also to reduce the number and size of mammary tumors in rats. The Cornell researchers now think that the triterpenoids may be doing much of the anti-cancer work.<br /><br />"Some compounds were more potent and acted differently against the various cancer cell lines, but they all show very potent anti-cancer activities and should be studied further," says Liu.<br /><br />With co-author Xiangjiu He, a Cornell postdoctoral researcher, Liu analyzed the peel from 230 pounds of red delicious apples from the Cornell Orchard and isolated their individual compounds. After identifying the structures of the promising compounds in the peel, the researchers tested the pure compounds against cancer cell growth in the laboratory. In the past, Liu has also identified compounds called phytochemicals -- mainly flavonoids and phenolic acids -- in apples and other foods that appear to be have anti-cancer properties as well, including inhibiting tumor growth in human breast cancer cells.<br /><br />"We believe that a recommendation that consumers to eat five to 12 servings of a wide variety of fruits and vegetables daily is appropriate to reduce the risks of chronic diseases, including cancer, and to meet nutrient requirements for optimum health," said Liu.<br /><br />The study online: http://pubs.acs.org/cgi-bin/abstract.cgi/jafcau/2007/55/i11/abs/jf063563o.html<br /><br /><br /><span style="font-weight:bold;"><br />Adults who eat apples, drink apple juice have lower risk for metabolic syndrome</span><br /><br /><span style="font-style:italic;">Apple product consumers likely to have lower blood pressure, trimmer waistlines, and more nutrient dense diets</span><br /><br />Not eating your apple a day" Perhaps you should be. Adults who eat apples, apple juice and applesauce have a significantly reduced risk of metabolic syndrome, a cluster of health problems that are linked to numerous chronic diseases such as diabetes and cardiovascular disease.<br /><br />The study results, presented at the Experimental Biology 2008 meeting this week, were derived from an analysis of adult food consumption data collected in the 1999-2004 National Health and Nutrition Examination Survey (NHANES), the government’s largest food consumption and health database.<br /><br />Dr. Victor Fulgoni analyzed the data, specifically looking at the association between consumption of apples and apple products, nutrient intake and various physiological parameters related to metabolic syndrome. When compared to non-consumers, adult apple product consumers had a 27% decreased likelihood of being diagnosed with metabolic syndrome.<br /><br />Fulgoni notes, “We found that adults who eat apples and apple products have smaller waistlines that indicate less abdominal fat, lower blood pressure and a reduced risk for developing what is known as the metabolic syndrome.”<br /><br />In addition to having a 30% decreased likelihood for elevated diastolic blood pressure and a 36% decreased likelihood for elevated systolic blood pressure, apple product consumers also had a 21% reduced risk of increased waist circumference – all predictors of cardiovascular disease and an increased likelihood of metabolic syndrome. Additionally, adult apple product consumers had significantly reduced C-reactive protein levels, another measurable marker related to cardiovascular risk.<br /><br />Furthermore, apple product consumers’ diets were healthier than non-consumers – they had an overall greater intake of fruit and key nutrients, including dietary fiber, vitamins A and C, calcium and potassium. These consumers also ate less total fat, saturated fat, discretionary fat and added sugars.<br /><br /><span style="font-weight:bold;">Apple pectin, apple juice extracts shown to have anticarcinogenic effects on colon</span><br /><br />The apples and apple juice you consume may have positive effects in one of the most unlikely places in the body – in the colon. New research has demonstrated that both apple pectin and polyphenol-rich apple juice components actually enhance biological mechanisms that produce anticarcinogenic compounds during the fermentation process.<br /><br />Using human fecal matter as the test substance, German researchers Dr. Dieter Schrenk, M.D. and his colleagues hypothesized that the compound butyrate could be increased in the presence of apple pectin and apple juice extracts.<br /><br />Butyrate has been suggested to be a chemopreventative metabolite that might prevent the occurrence of colorectal cancer, which is very common in Western industrialized countries. It is a short chain fatty acid which is seen as a major factor contributing to healthy colon mucosa. The research notes, “Butyrate not only serves as a major nutrient for the colon epithelia but is also thought to play an important role in the protective effect of natural fiber against colorectal cancer.”<br /><br />So how do apple pectin and apple juice extracts play a role in increasing amounts of butyrate? The laboratory tests performed by Schrenk found that by the increased production of butyrate via the addition of apple components, histone deacetlyases (HDAC) were inhibited. With slowed production of HDAC, there would be significantly less growth of precancerous and tumor cells.<br /><br />The research, published in the April 2008 issue of Nutrition, notes, “apples are a major source of natural fiber and of low molecular weight plan polyphenols in the Western diet.” The researchers conclude, “Pectin-rich apple products can thus be expected to exert anticarginogenic effects in the colon.”<br /><br /><br /><span style="font-weight:bold;">Apple consumers reap heart-health benefits</span><br /><br /><br /><span style="font-style:italic;">Apple consumers reap heart-health benefits thanks to flavonoid content, says new research<br /><br />American Heart Association new recommendations support increased fruit, vegetable consumption</span><br /><br />Apples may prove to be a winner when it comes to reducing the risk of heart disease, says a new study of more than 34,000 women. In this study, flavonoid-rich apples were found to be one of three foods (along with red wine and pears) that decrease the risk of mortality for both coronary heart disease (CHD) and cardiovascular disease (CVD) among post-menopausal women, The findings were published in the March 2007 American Journal of Clinical Nutrition.<br /><br />Women of all ages are encouraged to consume more fruit and vegetables, including apples and apple products, for heart health. However, this study focused on postmenopausal woman, a group becoming more aware of the risk for heart disease. Using a government database that assesses the flavonoid-compound content of foods, the researchers hypothesized that flavonoid intake (in general and from specific foods), might be inversely associated with mortality from CVD and CHD among the women in the study groupSubjects selected for this research analysis were postmenopausal and part of the ongoing Iowa Women's Health Study, each of which has been monitored for dietary intake and various health outcomes for nearly 20 years.<br /><br />As a result of the extensive analysis that considered what the women ate, the types of cardiovascular-related diseases they experienced, and the overall flavonoid content of an extensive list of foods, the researchers concluded that consumption of apples, pears and red wine were linked with the lowest risk for mortality related to both CHD and CVD (not just one or the other).<br /><br />"Flavonoids are compounds found in small quantities in numerous plant foods, including fruits and vegetables, tea, wine, nuts and seeds, and herbs and spices," say the university researchers from the University of Minnesota and the University of Oslo (Norway) Earlier research has indicated that flavonoids also have antioxidant properties that are linked to the reduction of oxidation of the bad (LDL - low density lipoprotein) cholesterol which have been linked in various ways with the development of CVD. According to the government database cited in this paper, apples contain a wide variety of flavonoid compounds.<br /><br />The researchers also believe this is the first prospective study of postmenopausal women to report on the intake and impact of total and specific flavonoid subclasses. They conclude, "Dietary intakes of flavanones, anthocyanins, and certain foods rich in flavonoids were associated with reduced risk of death due to CHD, CVD and all causes."_<br /><br />The publication of this positive study for apples comes on the heels of updated heart disease prevention guidelines for women just released by the American Heart Association in the February 20 issue of Circulation. As part of their guidelines, AHA emphasizes that women increase their intake of fruits and vegetables to help prevent heart disease over their lifetime, not just to reduce short-term risk. Worldwide, cardiovascular disease is the largest single cause of mortality among women, accounting for one third of all deaths.<br /><br /><br /><br /><span style="font-weight:bold;">Can an apple a day keep asthma away?</span><br /><br /><span style="font-style:italic;">Poor diets show increased respiratory symptoms in teens</span><br /><br />Teenagers who forego a healthy and balanced diet may have a harder time catching their breath. A new study, published in the July issue of CHEST, the peer-reviewed journal of the American College of Chest Physicians (ACCP), shows that a low dietary intake of certain nutrients increases the likelihood of respiratory symptoms such as asthma, especially in teens who smoke. Furthermore, a lack of these nutrients may also lead to lower lung function.<br /><br />“Our study, as well as other research, suggests that higher intakes of antioxidant and anti-inflammatory micronutrients are associated with lower reports of cough, respiratory infections, and less severe asthma-related symptoms,” said lead study author Jane Burns, ScD, Harvard School of Public Health. “Teenagers who have low dietary intakes of fruit, vitamin E, and omega-3 fatty acids are at greater risk of having asthma, emphasizing the importance of a balanced diet, composed of whole foods.”<br /><br />While observing 12th-grade students from 12 communities around the US and Canada, Dr. Burns and her colleagues from the Harvard School of Public Health, Health Canada, Brigham and Women’s Hospital, and the Environmental Protection Agency (EPA), examined the associations of low dietary nutrient intake with low pulmonary function and respiratory symptoms. Over the period of one school year, 2,112 students completed a standardized respiratory questionnaire and a dietary questionnaire. They also answered questions about medication use, smoking habits, and recent exercise, before participating in lung function testing. Dr. Burns explained that the researchers focused on teens because it is the ideal age at which to test lung capacity and eating habits.<br /><br />“During late adolescence, physical stature has, on average, been attained and lung growth closely parallels this growth. Therefore we were observing a time when lung function was close to its optimal capacity,” she said. “Also, although our diet survey targeted eating habits only during the past year, it did give us some idea of the teens’ general past diet. However, their current respiratory health may be a reflection of diet during childhood, as well as during the past year.”<br /><br />The majority of adolescents in the study were white, one third was overweight, and 72% did not consume multivitamins. Also, nearly 25% reported smoking on a daily basis. Researchers also found that at least one third of the students’ diets were below the recommended levels of fruit, vegetable, vitamins A and E, beta-carotene, and omega-3 fatty acid intake.<br /><br />“Vitamin supplements can help teens meet their daily recommended levels,” said Dr. Burns, “and surprisingly, even relatively low levels of omega-3 fatty acids appeared to protect teens from higher reported respiratory symptoms.”<br /><br />Results showed that low dietary intakes of fruit, vitamins C and E, and omega-3 fatty acids were associated with decreased lung function and a greater risk of chronic bronchitic symptoms, wheeze, and asthma. These risks were further increased among students with the lowest intakes and who also smoked.<br /><br />“I wish we could say that an apple a day can keep asthma away, but it’s a complex disease with a genetic component. However, it may be that certain foods can lessen or prevent asthma symptoms,” said Dr. Burns. “The most important thing to remember is that diet can have a significant impact on teens’ respiratory health. I would encourage them to make healthy eating a part of their daily routine, and stress to them that smoking is bad.” Researchers emphasized that fresh fruits make for convenient snacks. They also suggest preparing a simple, daily family meal, as a method to promote both communication and good nutrition.<br /><br />“A balanced diet is not only good for lung health, but for general health,” said Mark J. Rosen, MD, FCCP, President of the American College of Chest Physicians. “Parents and physicians should work together to monitor and maintain healthy diets and lifestyles for children of all ages.”<br /><br /><br /><br /><span style="font-weight:bold;">Apples, apple juice shown to prevent early atherosclerosis</span><br /><br />A new study shows that apples and apple juice are playing the same health league as the often-touted purple grapes and grape juice. The study was published in the April 2008 issue of Molecular Nutrition and Food Research.<br /><br />Researcher Kelly Decorde from the Universite Montpelier in France was part of the European research team that found apples have similar cardiovascular protective properties to grapes. The researchers also observed that processing the fruit into juice has the potential to increase the bioavailability of the naturally-occurring compounds and antioxidants found in the whole fruit.<br /><br />Using a variety of established analytical techniques, aortic plaque was evaluated to determine the effectiveness in decreasing plaque that is associated with atherosclerosis.<br /><br />According to the research, “This study demonstrates that processing apples and purple grapes into juice modifies the protective effect of their phenolics against diet induced oxidative stress and early atherosclerosis in hypercholesterolemic hamsters.”<br /><br />Researchers also noted, “These results show for the first time that long-term consumption of antioxidants supplied by apples and purple grapes, especially phenolic compounds, prevents the development of atherosclerosis in hamsters, and that the processing can have a major impact on the potential health effects of a product.”<br /><br />In summary, the researchers stated that their work would help provide encouragement that fruit and fruit juices may have significant clinical and public health relevance.<br /><br /><br /><br /><span style="font-weight:bold;">Apples, Apple Juice Lower Wheezing and Asthma Risk in Children</span><br /><br /><br /><br />Published in the September 2007 issue of Thorax, the latest study finds that when women ate apples during pregnancy, researchers found a significant decrease in asthma and wheezing among their children when the children were followed over five years and reached five years of age.<br /><br />This unique longitudinal study tracked dietary intake by 1253 mother-child pairs. According to the researchers that conducted medical evaluations for asthma and related symptoms (i.e., wheezing) in the children, they found no other association with decreased risk other than for apple consumption. The only other positive association found between prenatal food intake and risk reduction in the children was with fish intake by the mothers, for which the researchers found that children of mothers who ate fish had a lowered incidence of doctor-confirmed eczema.<br /><br />A similar but different study published June 2007 also showed a link between apple juice consumption and a reduction in wheezing among children. That study was published in June’s European Respiratory Journal.<br /><br />Among children who experienced what was characterized as “current wheeze” (where the child had wheezing or whistling in the chest in the last 12 months), there was a significant, dose response association between consumption of apple juice and a reduced incidence of the wheezing. The researchers found that drinking apple juice made from concentrate and consumption of bananas one or more times a day (compared to drinking apple juice or eating bananas less than once a month) was directly associated with improvement of wheezing occurences.<br /><br />According to the authors of the Thorax paper, the protective effect from apples is attributable to their powerful phytochemical content, which includes flavonoids, isoflavonoids, and phenolic acids. Apples and apple products combined are the largest source of free phenolics in people’s diet in the US and in Europe.<br /><br />The American Lung Association states that asthma remains a major public health concern. In 2003, approximately 20 million Americans had asthma and the condition accounted for an estimated 12.8 million lost school days in children. Asthma ranks within the top ten prevalent conditions causing limitation of activity and costs our nation $16.1 billion in health care costs annually.<br /><span style="font-weight:bold;"><br />Apple's benefits reach into the womb to fight asthma</span><br /><br /><br />Eating apples while pregnant may give new meaning to an apple a day keeping the doctor away. Compelling new research has concluded that mothers who eat apples during pregnancy may protect their children from developing asthma later in life. The study was published in Thorax online.<br /><br />This unique longitudinal study tracked dietary intake by nearly 2000 pregnant women, then examined the effects of the maternal diet on airway development in more than 1200 of their children five years later. Among a wide variety of foods consumed and recorded by the pregnant women, the researchers concluded that the children of mothers who ate apples had a significantly reduced risk for the development of asthma and childhood wheezing.<br /><br />This study focuses on medical evaluations for asthma and related symptoms (i.e., wheezing) when the children were five years old. As a result of the evaluations cited in this research, other than apples, there were no consistent associations found between prenatal consumption of a range of healthful foods and asthma in the 1253 children who were evaluated.<br /><br />Children of mothers who ate apples during pregnancy were much less likely to exhibit symptoms of asthma (including wheezing), say the researchers who hail from institutions in The Netherlands and Scotland. These same researchers previously reported positive associations between maternal consumption of vitamins A, E, D and zinc with reduced risk of asthma, wheeze and eczema in children.<br /><br />The only other positive association found between prenatal food intake and risk reduction in the children was with fish, for which the researchers found that children of mothers who ate fish had a lowered incidence of doctor-confirmed eczema.<br /><br />According to the research, "The present study suggests beneficial associations between maternal apple intake during pregnancy and wheeze and asthma at age five years." They add that their findings "suggest an apple specific effect, possibly because of its phytochemical content, such as flavonoids." The research paper cites other related studies on apples, including those which found that "intake of apples as a significant source of flavonoids and other polyphenols has been beneficially associated with asthma, bronchial hypersensitivity, and lung function in adults."<br /><br />In 2004, the National Center for Health Statistics reported that nine million U.S. children have been diagnosed with asthma at one point in their lives and four million children suffered from asthma attacks that year. Others suffer from "hidden asthma" – undetected or undiagnosed asthma, according the American Lung Association. The cost of this disease is great – statistics show asthma to be the third-ranking cause of hospitalization among children under 15 and is among the leading causes of school absenteeism.<br /><br /><span style="font-weight:bold;">Eating apples/fish helps vs asthma/allergies</span><br /><br />Women who eat apples and fish during pregnancy may reduce the risk of their children developing asthma or allergic disease, suggests a new study presented at the American Thoracic Society 2007 International Conference, on Sunday, May 20.<br /><br />The SEATON study, conducted at the University of Aberdeen, UK, found that the children of mothers who ate the most apples were less likely to ever have wheezed or have doctor-confirmed asthma at the age of 5 years, compared to children of mothers who had the lowest apple consumption. Children of mothers who ate fish once or more a week were less likely to have had eczema than children of mothers who never ate fish.<br /><br />The study did not find any protective effect against asthma or allergic diseases from many other foods, including vegetables, fruit juice, citrus or kiwi fruit, whole grain products, fat from dairy products or margarine or other low-fat spreads.<br /><br />The researchers studied 1212 children born to women who had filled out food questionnaires during their pregnancy. When the children were 5 years old, the mothers filled out a questionnaire about the children’s respiratory symptoms and allergies, as well as a questionnaire about their child’s food consumption.<br /><br />The children were also given lung function and allergy tests. Previous studies in the same children have found evidence for protective effects of vitamin E and D and zinc during pregnancy in reducing the risk of children’s wheeze and asthma, notes researcher Saskia Willers, M.Sc. of Utrecht University in the Netherlands. If the new results are confirmed, she says, "recommendations on dietary modification during pregnancy may help to prevent childhood asthma and allergy."<br /><br />Willers concludes that at least until age 5, a mother’s diet during pregnancy might be more influential on a child’s respiratory health than the child’s own diet. She notes that further study of this group of children will be needed to see whether the association with the mothers’ diet declines in older children, and if mothers’ and their childrens’ diets interact in older children.<br /><br />Willers suggests that the beneficial effect of apples may come from powerful antioxidants called flavonoids, while fish’s protective effect may come from omega-3 fatty acids, which other studies have suggested have a protective effect on the heart and may have a protective effect in asthma. "Other studies have looked at individual nutrients’ effect on asthma in pregnancy, but our study looked at specific foods during pregnancy and the subsequent development of childhood asthma and allergies, which is quite new," Willers says. "Foods contain mixtures of nutrients that may contribute more than the sum of their parts."<br /><br /><br /><br /><br /><br /><b>Naturally-occurring apple compounds reduce risk of pancreatic cancer</b><br /><br />Smokers benefit most from intake of 'hidden' plant nutrients<br /><br />Eating flavonol-rich foods like apples may help reduce the risk of pancreatic cancer, says a team of international researchers. Quercetin, which is found naturally in apples and onions, has been identified as one of the most beneficial flavonols in preventing and reducing the risk of pancreatic cancer. Although the overall risk was reduced among the study participants, smokers who consumed foods rich in flavonols had a significantly greater risk reduction.<br /><br />This study, published in the October 15 issue of the American Journal of Epidemiology, is the first of its kind to evaluate the effect of flavonols – compounds found specifically in plants – on developing pancreatic cancer. According to the research paper, “only a few prospective studies have investigated flavonols as risk factors for cancer, none of which has included pancreatic cancer. “<br /><br />Researchers from Germany, the Univ. of Hawaii and Univ. of Southern California tracked food intake and health outcomes of 183,518 participants in the Multiethnic Cohort Study for eight years. The study evaluated the participants’ food consumption and calculated the intake of the three flavonols quercetin, kaempferol, and myricetin. The analyses determined that flavonol intake does have an impact on the risk for developing pancreatic cancer.<br /><br />The most significant finding was among smokers. Smokers with the lowest intake of flavonols presented with the most pancreatic cancer. Smoking is an established risk factor for the often fatal pancreatic cancer, notes the research.<br /><br />Among the other findings were that women had the highest intake of total flavonols and seventy percent of the flavonol intake came from quercetin, linked to apple and onion consumption.<br /><br />It is believed that these compounds may have anticancer effects due to their ability to reduce oxidative stress and alter other cellular functions related to cancer development.<br /><br />“Unlike many of the dietary components, flavonols are concentrated in specific foods rather than in broader food groups, for example, in apples rather than in all fruit,” notes the research study. Previously, the most consistent inverse association was found between flavonols, especially quercetin in apples and lung cancer, as pointed out in this study. No other epidemiological flavonol studies have included evaluation of pancreatic cancer.<br /><br />While found in many plants, flavonols are found in high concentrations in apples, onions, tea, berries, kale, and broccoli. Quercetin is most plentiful in apples and onions.<br /><b><br />Compound in Apples Inhibits E. coli</b><br /><br />A compound that is abundant in apples and strawberries inhibits the highly pathogenic E. coli O157:H7 biofilms while sparing a beneficial strain of E. coli that also forms biofilms in the human gut, according to a paper in the December 2011 issue of the journal Infection and Immunology.<br /><br />Transcriptome analysis revealed that the compound, called phloretin, suppresses toxin and other genes involved in O157:H7 pathology and biofilm formation. And in a rat model of colitis, phloretin, reduced colon inflammation and body weight loss. "Phloretin has a triple biological activity as an antioxidant compound, a biofilm inhibitor, and an anti-inflammatory agent," says corresponding author Jintae Lee of Yeungnam University, Gyeongsan, Korea.<br /><br />E. coli O157:H7 causes hemorrhages in the intestine. To date, no effective therapy for O157:H7 biofilms has been found. Biofilms generally are notoriously resistant to antimicrobial therapy. So in the study, Lee screened a dozen flavonoids, including phloretin, for their ability to inhibit these biofilms. "We found that phloretin markedly reduced E. coli O157:H7 biofilm formation on abiotic surface and human colon epithelial cells, while phloretin did not harm commensal E. coli K-12 biofilms," says Lee. Commensal E. coli can actually fortify the human immune system, he says.<br /><br />In addition to its anti- E. coli O157:H7 biofilm activity, phloretin "accounts in part for the antioxidant capacity of apples, and it also shows anti-inflammatory activity," says Lee. "This study suggests that phloretin in apples could reduce the risk of E. coli O157:H7 infection and intestinal inflammation."<br /><br />"This study demonstrated for the first time that phloretin, a natural flavonoid, is a nontoxic inhibitor of enterohemorrhagic E. coli O157:H7 biofilms, but does not harm commensal E. coli K-12 biofilms," Lee writes. "Also, importantly, our results confirmed that phloretin shows anti-inflammatory properties in both the in vitro and in vivo inflammatory colitis models. The effect of phloretin was noticeably more pronounced than that of the conventional [inflammatory bowel disease] drug 5-aminosalicylic acid."maestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-36373477467102880542012-02-17T13:21:00.000-08:002012-03-03T17:31:06.664-08:00Vitamin B and omega-3 supplementation and cancer: New dataΩ<br /><br />Researchers from the Nutritional Epidemiology Joint Research Unit have just published a study showing that, in men with a previous history of cardiovascular pathologies, supplementation with B vitamins and omega-3 polyunsaturated fatty acids did not significantly increase the occurrence of cancer. <br /><br />However, women with a previous history of cardiovascular pathologies seem to have a higher cancer risk after five years of supplementation. The research is published in detail in the Archives of Internal Medicine.<br /><br />Although some studies have suggested that supplementation with B vitamins has some benefits for protecting against cancer, the few randomised clinical trials conducted internationally in recent years remain equivocal.<br /><br />The results of studies of the influence of supplementation with polyunsaturated fatty acids have been mixed.<br /><br />That is why Valentina Andreeva and Pilar Galan and their staff wanted to study the effects of B vitamins and omega-3 polyunsaturated fatty acids (PUFAs) on cancer by monitoring, for five years from 2003 to 2009, more than 2500 people aged between 45 and 80 who had survived a heart attack, stroke or angina in the last 12 months.<br /><br />The aim of the trial was to check the hypothesis that supplementation with en5-methyl-THF (and vitamins B6 and B12) and/or omega-3 was of value in preventing the recurrence of ischaemic pathologies in subjects who had suffered a heart attack or stroke.<br /><br />The results, published this week in the Archives of Internal Medicine, are the outcome of a specific analysis performed as part of the intervention study SU.FOL.OM3, the results of which were published in 2010 in the British Medical Journal<br /><br />SU.FOL.OM3 is a randomised double-blind placebo-controlled secondary prevention trial in which participants aged from 45 to 80 years with a previous history of cardiovascular pathologies were given daily supplements for five years of B vitamins (3 mg of vitamin B6, 560 μg of folates and 20 μg of vitamin B12) and/or omega-3 PUFAs (600 mg of eicosapentaenoic acid, EPA, and docosapentaenoic acid, DHA, in a ratio of 2:1), according to a factorial design.<br /><br />It tested the effect of supplementation on cancer development over the five-year monitoring period in 145 men and 29 women.<br /><br />All types of cancer were monitored<br /><br />"Despite the low numbers, the results are significant," the authors believe, because the "methodology used – a randomised double-blind trial – is stringent".<br /><br />The researchers conclude that "Neither B vitamin supplementation nor omega-3 PUFA supplementation has a significant effect on the occurrence of cancer in men. However, women receiving omega-3 fatty acids tended to present a higher risk of cancer compared with the placebo group (adjusted HR =3.02; CI of 95 % = [1.33; 6.89]). Although the underlying mechanisms are not clear, a potential mediating effect on the metabolism of oestrogens is suggested," they add.<br /><br />To confirm or contradict these results, it is necessary to await new studies: randomised trials, cohort studies and mechanistic studies.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-77125116977003720572012-02-17T13:18:00.000-08:002012-03-03T17:31:06.767-08:00Cranky today? Even mild dehydration can alter our moodsΩ<br /><br />Most people only think about drinking water when they are thirsty; but by then it may already be too late.<br /><br />Even mild dehydration can alter a person's mood, energy level, and ability to think clearly, according to two studies recently conducted at the University of Connecticut's Human Performance Laboratory.<br /><br />The tests showed that it didn't matter if a person had just walked for 40 minutes on a treadmill or was sitting at rest – the adverse effects from mild dehydration were the same. Mild dehydration is defined as an approximately 1.5 percent loss in normal water volume in the body.<br /><br />The test results affirm the importance of staying properly hydrated at all times and not just during exercise, extreme heat, or exertion, says Lawrence E. Armstrong, one of the studies' lead scientists and a professor of physiology in UConn's Department of Kinesiology in the Neag School of Education.<br /><br />"Our thirst sensation doesn't really appear until we are 1 [percent] or 2 percent dehydrated. By then dehydration is already setting in and starting to impact how our mind and body perform," says Armstrong, an international expert on hydration who has conducted research in the field for more than 20 years. "Dehydration affects all people, and staying properly hydrated is just as important for those who work all day at a computer as it is for marathon runners, who can lose up to 8 percent of their body weight as water when they compete."<br /><br />Separate groups of young women and men were tested. Twenty-five women took part in one study. Their average age was 23. The men's group consisted of 26 men with an average age of 20. All of the participants were healthy, active individuals, who were neither high-performance athletes nor sedentary – typically exercising for 30 to 60 minutes per day.<br /><br />Each participant took part in three evaluations that were separated by 28 days. All of the participants walked on a treadmill to induce dehydration, and all of the subjects were hydrated the evening before the evaluations commenced. As part of the evaluation, the subjects were put through a battery of cognitive tests that measured vigilance, concentration, reaction time, learning, memory, and reasoning. The results were compared against a separate series of tests when the individuals were not dehydrated.<br /><br />In the tests involving the young women, mild dehydration caused headaches, fatigue, and difficulty concentrating, according to one of the studies, which appears in the February issue of The Journal of Nutrition. The female subjects also perceived tasks as more difficult when slightly dehydrated, although there was no substantive reduction in their cognitive abilities.<br /><br />In the tests involving the young men, mild dehydration caused some difficulty with mental tasks, particularly in the areas of vigilance and working memory, according to the results of the second UConn study. While the young men also experienced fatigue, tension, and anxiety when mildly dehydrated, adverse changes in mood and symptoms were "substantially greater in females than in males, both at rest and during exercise," according to the study. The men's study was published in the British Journal of Nutrition in November 2011.<br /><br />"Even mild dehydration that can occur during the course of our ordinary daily activities can degrade how we are feeling – especially for women, who appear to be more susceptible to the adverse effects of low levels of dehydration than men," says Harris Lieberman, one of the studies' co-authors and a research psychologist with the Military Nutrition Division, U.S. Army Research Institute of Environmental Medicine in Natick, Mass. "In both sexes these adverse mood changes may limit the motivation required to engage in even moderate aerobic exercise. Mild dehydration may also interfere with other daily activities, even when there is no physical demand component present."<br /><br />Why women and men are so adversely affected by mild dehydration is unclear, and more research is necessary. But other research has shown that neurons in the brain detect dehydration and may signal other parts of the brain regulating mood when dehydration occurs. This process could be part of an ancient warning system protecting humans from more dire consequences, and alerting them to the need for water to survive.<br /><br />In order to stay properly hydrated, experts like Armstrong recommend that individuals drink eight, 8-ounce glasses of water a day, which is approximately equivalent to about 2 liters of water. People can check their hydration status by monitoring the color of their urine. Urine should be a very pale yellow in individuals who are properly hydrated. Urine that is dark yellow or tan in color indicates greater dehydration. Proper hydration is particularly important for high-risk groups, such as the elderly, people with diabetes, and children.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-53616422953101954102012-02-16T11:37:00.000-08:002012-03-03T17:31:06.872-08:00Trouble Sleeping? It May Affect Your Memory Later OnΩ<br /><br />The amount and quality of sleep you get at night may affect your memory later in life, according to research that was recently released and will be presented at the American Academy of Neurology's 64th Annual Meeting in New Orleans April 21 to April 28, 2012.<br /><br />"Disrupted sleep appears to be associated with the build-up of amyloid plaques, a hallmark marker of Alzheimer's disease, in the brains of people without memory problems," said study author Yo-El Ju, MD, with Washington University School of Medicine in St. Louis and a member of the American Academy of Neurology. "Further research is needed to determine why this is happening and whether sleep changes may predict cognitive decline."<br /><br />Researchers tested the sleep patterns of 100 people between the ages of 45 and 80 who were free of dementia. Half of the group had a family history of Alzheimer's disease. A device was placed on the participants for two weeks to measure sleep. Sleep diaries and questionnaires were also analyzed by researchers.<br /><br />After the study, it was discovered that 25 percent of the participants had evidence of amyloid plaques, which can appear years before the symptoms of Alzheimer's disease begin. The average time a person spent in bed during the study was about eight hours, but the average sleep time was 6.5 hours due to short awakenings in the night.<br /><br />The study found that people who woke up more than five times per hour were more likely to have amyloid plaque build-up compared to people who didn't wake up as much. The study also found those people who slept "less efficiently" were more likely to have the markers of early stage Alzheimer's disease than those who slept more efficiently. In other words, those who spent less than 85 percent of their time in bed actually sleeping were more likely to have the markers than those who spent more than 85 percent of their time in bed actually sleeping.<br /><br />"The association between disrupted sleep and amyloid plaques is intriguing, but the information from this study can't determine a cause-effect relationship or the direction of this relationship. We need longer-term studies, following individuals' sleep over years, to determine whether disrupted sleep leads to amyloid plaques, or whether brain changes in early Alzheimer's disease lead to changes in sleep," Ju said. "Our study lays the groundwork for investigating whether manipulating sleep is a possible strategy in the prevention or slowing of Alzheimer disease."<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-83814357629735903322012-02-16T11:36:00.000-08:002012-03-03T17:31:06.972-08:00How Fast You Walk and Your Grip in Middle Age May Predict Dementia, Stroke RiskΩ<br /><br />Simple tests such as walking speed and hand grip strength may help doctors determine how likely it is a middle-aged person will develop dementia or stroke. That’s according to new research that was released today and will be presented at the American Academy of Neurology’s 64th Annual Meeting in New Orleans April 21 to April 28, 2012.<br /><br />“These are basic office tests which can provide insight into risk of dementia and stroke and can be easily performed by a neurologist or general practitioner,” said Erica C. Camargo, MD, MSc, PhD, with Boston Medical Center.<br /><br />More than 2,400 men and women with an average age of 62 underwent tests for walking speed, hand grip strength and cognitive function. Brain scans were also performed. During the follow-up period of up to 11 years, 34 people developed dementia and 70 people had a stroke.<br /><br />The study found people with a slower walking speed in middle age were one-and-a-half times more likely to develop dementia compared to people with faster walking speed. Stronger hand grip strength was associated with a 42 percent lower risk of stroke or transient ischemic attack (TIA) in people over age 65 compared to those with weaker hand grip strength. This was not the case, however, for people in the study under age 65.<br /><br />“While frailty and lower physical performance in elderly people have been associated with an increased risk of dementia, we weren’t sure until now how it impacted people of middle age,” said Camargo.<br /><br />Researchers also found that slower walking speed was associated with lower total cerebral brain volume and poorer performance on memory, language and decision-making tests. Stronger hand grip strength was associated with larger total cerebral brain volume as well as better performance on cognitive tests asking people to identify similarities among objects. “Further research is needed to understand why this is happening and whether preclinical disease could cause slow walking and decreased strength,” said Camargo.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-21712418663202401092012-02-16T10:33:00.000-08:002012-03-03T17:31:07.074-08:00Mediterranean Diet Good For BrainΩ<br /><br />According to a study in the February issue of Archives of Neurology, one of the JAMA/Archives journals, a Mediterranean-style diet (MeDi) may be healthier for the brain. Researchers have discovered that a MeDi diet is associated with reduced damage of small blood vessels in the brain.<br /><br />White matter hyperintensities (WMHs) are markers of chronic small vessel damage and can be seen using brain magnetic resonance imaging (MRI).<br /><br />The researchers explain:<br /><br /> "Although diet may be an important predictor of vascular disease, little is known about the possible association between dietary habits and WMHs. Studies have suggested that consumption of a MeDi [Mediterranean Diet] is associated with a reduced risk of the metabolic syndrome, coronary heart disease, stroke and cognitive disorders, but no studies to date, to our knowledge, have examined the association between a MeDi and WMH volume (WMHV)."<br /><br />To examine this association, data from 966 participants in the Northern Manhattan Study were assessed by Hannah Gardener, Sc.D., of the University of Miami Miller School of Medicine and her team. In order to evaluate dietary patterns during the previous year, the researchers gave participants a food frequency questionnaire. The researchers then used the answers from the questionnaire to determine a MeDi compliance score. The team measured WMHV by quantitative brain MRI.<br /><br />The researchers found that on a MeDi scale from 0 to 10:<br /><br /> * 11.6% of participants scored 0 to 2<br /> * 15.8% scored 3<br /> * 23% scored 4<br /> * 23.5% scored 5<br /> * and 26.1% of participants scored between 6 to 9 <br /><br />In addition they discovered that men and had higher MeDi scores than women, as well as those who reported moderate to heavy levels of physical activity. Furthermore, results showed that individuals with a MeDi score of 6+ had lower BMI.<br /><br />Results from the study indicate that among participants, those who consume a MeDi have a lower burden of WMHV. This connection was independent of vascular and sociodemographic risk factors including smoking, blood lipid levels, physical activity, BMI, history of cardiac disease, hypertension, and diabetes. The researchers found that the only component of the MeDi score that was independently linked to WMHV was the ratio of monounsaturated to saturated fat.<br /><br />Ωmaestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.comtag:blogger.com,1999:blog-699142200182252286.post-70411342996403222632012-02-16T09:57:00.000-08:002012-03-03T17:31:07.175-08:00Omega-3 Slows Down Retinitis Pigmentosa ProgressionA report published Online First by Archives of Ophthalmology, one of the JAMA/Archives journals, reveals that adults with retinitis pigmentosa showed slower decline in annual rates of distance and retinal visual acuities by consuming a diet rich in omega-3 fatty acids. <br /><br />Results from the study revealed that the mean (average) annual rate of decline in distance visual acuity was 40% slower among participants who consumed a diet high in long-chain _-3 fatty acids (≥0.20 g/d), compared with participants whose diet was low in omega-3 fatty acids. <br /><br />In a previous study, the team revealed that dietary omega-3 intake had an effect on retaining central visual field sensitivity. They found that individuals receiving _-3 intake of at least 0.20 g/d, in conjunction with vitamin A palmitate, 15,000 IU/d had nearly a 50% slower rate of decline in central visual field sensitivity than patients receiving a lower omega-3 intake and the same dose of vitamin A.maestr0http://www.blogger.com/profile/12116286230699398663noreply@blogger.com