Dieting
Healthy Food Availability Could Depend on Where You Live—So Does the Quality of Your Diet
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The availability of healthy food choices and your quality of diet is associated with where you live, according to two studies conducted by researchers at the Johns Hopkins Bloomberg School of Public Health. Researchers examined healthy food availability and diet quality among Baltimore City and Baltimore County, Md., residents and found that availability of healthy foods was associated with quality of diet and 46 percent of lower-income neighborhoods had a low availability of healthy foods. The results are published in the March 2009 issue of the American Journal of Clinical Nutrition and the December 2008 issue of the American Journal of Preventive Medicine.
“Place of residence plays a larger role in dietary health than previously estimated,” said Manuel Franco, MD, PhD, lead author of the studies and an associate with the Bloomberg School’s Department of Epidemiology. “Our findings show that participants who live in neighborhoods with low healthy food availability are at an increased risk of consuming a lower quality diet. We also found that 24 percent of the black participants lived in neighborhoods with a low availability of healthy food compared with 5 percent of white participants.”
Researchers conducted a cross-sectional study to examine the association between the availability of healthy foods and diet quality among 759 participants of a population-based cardiovascular cohort study, the Multi-Ethnic Study of Atherosclerosis (MESA).
China illegal additives still blight food: official
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Chinese dairy products, flour, meat and other foods remain dangerously tainted with illegal additives despite a crackdown, the country’s health ministry said Tuesday.
Vice Minister of Health, Chen Xiaohong, told a video conference for officials some food and liquor makers continued to use banned additives, and high-tech lawbreakers were “challenging the oversight and administration capacities of law enforcement agencies,” the Xinhua news agency reported.
“Some food businesses still lack a grasp of the harmfulness and severity of illegal additives,” Chen said. “Their commitment to correcting this is not high.”
Following peanut product recall, six in ten Americans taking steps to reduce risk of sickness
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A new national survey conducted by the Harvard Opinion Research Program at the Harvard School of Public Health finds that the vast majority (93%) of Americans have heard or read about the recent ongoing recall of peanut products. Among those who are aware of the recall, about six in ten (61%) say they have taken one or more precautions to reduce their risk of getting sick from contaminated peanut products. Specifically, about one in four say they have checked ingredient lists on foods in the grocery store to make sure they know which products contain peanuts (27%), thrown away foods in their home that they think might be on the recall list (25%), stopped ordering foods containing peanuts in restaurants (22%), and stopped eating those foods they heard were in the recall (28%), while 15% say they have stopped eating all foods containing peanuts.
The poll also finds that among those who are aware of the recall, one in four (25%) mistakenly believe that major national brands of peanut butter are involved in the recall. Seventy percent correctly identify peanut butter crackers as being involved. However, less than half are aware that several other products containing peanuts have been recalled, including some in each of the following food categories: snack bars (49%), cakes, brownies, and cookies (45%), pet treats (43%), candy (39%), pre-packaged meals (36%), ice cream (27%), and jars or cans of dry-roasted peanuts (23%).
The survey was conducted between February 4-8, 2009, during the peanut product recall that began on January 12, 2009.
Mediterranean diet may protect the brain
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Eating a Mediterranean-style diet high in vegetables, fruits and nuts, legumes, fish and cereals, and low in dairy products, meat, and fat, with moderate alcohol consumption, is not only good for the heart, it’s also good for the brain, new research hints.
In a study, “following Mediterranean diet-type habits was associated with reduced risk for getting mild cognitive impairment—a transitional stage between normal cognition and dementia/Alzheimer’s disease,” Dr. Nikolaos Scarmeas told Reuters Health.
“Additionally, subjects who already had mild cognitive impairment and had a higher adherence to the Mediterranean diet had lower risk for converting to Alzheimer’s disease,” he noted.
Egg intake linked to diabetes risk
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People who sit down to a daily breakfast of eggs may have an increased risk of developing type 2 diabetes, new research suggests.
In a long-term study of 57,000 U.S. adults, researchers found that those who ate an egg a day were 58 percent to 77 percent more likely than non-egg-eaters to develop type 2 diabetes.
The findings, published in the journal Diabetes Care, do not necessarily mean that eggs themselves put people on a path to diabetes, according to the researchers. But they do suggest it is wise to limit your egg intake.
Moderate Alcohol Consumption May Help Seniors Keep Disabilities at Bay
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It is well known that moderate drinking can have positive health benefits — for instance, a couple of glasses of red wine a day can be good for the heart. But if you’re a senior in good health, light to moderate consumption of alcohol may also help prevent the development of physical disability.
That’s the conclusion of a new UCLA study, available in the online edition of the American Journal of Epidemiology, which found that light to moderate drinking among these seniors reduced their odds of developing physical problems that would prevent them from performing common tasks such as walking, dressing and grooming.
“If you start out in good health, alcohol consumption at light to moderate levels can be beneficial,” said lead study author Dr. Arun Karlamangla, an associate professor of medicine in the division of geriatrics at the David Geffen School of Medicine at UCLA. “But if you don’t start out healthy, alcohol will not give you a benefit.”
Experts draw link between tainted milk, kidney stones
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Scientists in China and Hong Kong have established for the first time in a study that consuming the plastic-making chemical melamine can cause kidney stones in people.
At least six children died and 290,000 fell ill in China last year after consuming milk formula tainted with melamine, which was added to cheat protein tests. But the causal link between melamine and kidney problems the children suffered was never scientifically established until now.
The experts studied urine samples of 15 mainland Chinese toddlers with kidney stones and compared those taken from 20 children in Hong Kong who also consumed tainted milk but who did not develop stones.
News from the January 2009 Journal of the American Dietetic Association
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The January issue of the Journal of the American Dietetic Association features research studies focusing on everyday eating habits of consumers. Researchers look at why sack lunches may not always meet the nutritional needs of preschool children and how making time for meals directly influences diets of young adults.
Packing a Lunch for Preschoolers May Not Be a Good Idea
Approximately 13 million children in the United States eat three or more meals and snacks each day at one of the country’s 117,000 regulated child-care centers. Due to increasing cost of food preparation and storage, more and more of these centers are requiring parents to provide food for their children.
But sack lunches sent from home may not regularly provide adequate nutrients for the growth and development of young children, according to a study conducted by researchers at the University of Texas at Austin and Third Coast Research and Development Inc. of Galveston, Texas. The study included 74 three to five-year-olds attending full-time child-care centers that required parents to provide lunches. Lunch contents were observed and recorded for three consecutive days.
Fast food near schools means fatter kids
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Adolescents who go to school within a half-mile of a fast-food restaurant are more likely to be overweight or obese than kids whose schools are further away, new research suggests.
The young people in the study also ate fewer servings of fruits and vegetables and drank more soda if there was at least one fast food restaurant within a half-mile radius of their school, Drs. Brennan Davis of Azusa Pacific University in Azusa, California and Christopher Carpenter of the University of California at Irvine found.
“Overall, our patterns are consistent with the idea that fast food near schools affects students’ eating habits, overweight, and obesity,” they conclude in a report in the American Journal of Public Health.
Diabetic youth may try unhealthy dieting tactics
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Young people with type 1 and type 2 diabetes are often overweight and many turn to unhealthy weight loss practices, such as using over-the-counter diet aids without a doctor’s advice, fasting and taking laxatives, new research shows.
Dr. Jean M. Lawrence, of Kaiser Permanente Southern California, Pasadena, and colleagues studied 1742 female and 1615 males, of whom 520 had type 2 diabetes and 2837 had type 1 diabetes. The subjects’ average age was 15 years.
Roughly half of the subjects reported ever trying to lose weight, they report in the journal Diabetes Care.
Honey bees on cocaine dance more, changing ideas about the insect brain
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In a study that challenges current ideas about the insect brain, researchers have found that honey bees on cocaine tend to exaggerate.
Normally, foraging honey bees alert their comrades to potential food sources only when they’ve found high quality nectar or pollen, and only when the hive is in need. They do this by performing a dance, called a “round” or “waggle” dance, on a specialized “dance floor” in the hive. The dance gives specific instructions that help the other bees find the food.
Foraging honey bees on cocaine are more likely to dance, regardless of the quality of the food they’ve found or the status of the hive, the authors of the study report.
Sugar can be addictive, Princeton scientist says
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A Princeton University scientist will present new evidence today demonstrating that sugar can be an addictive substance, wielding its power over the brains of lab animals in a manner similar to many drugs of abuse.
Professor Bart Hoebel and his team in the Department of Psychology and the Princeton Neuroscience Institute have been studying signs of sugar addiction in rats for years. Until now, the rats under study have met two of the three elements of addiction. They have demonstrated a behavioral pattern of increased intake and then showed signs of withdrawal. His current experiments captured craving and relapse to complete the picture.
“If bingeing on sugar is really a form of addiction, there should be long-lasting effects in the brains of sugar addicts,” Hoebel said. “Craving and relapse are critical components of addiction, and we have been able to demonstrate these behaviors in sugar-bingeing rats in a number of ways.”
Mediterranean Diet Plus Nuts May Help Manage Metabolic Syndrome
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A traditional Mediterranean diet with an additional daily serving of mixed nuts appears to be useful for managing some metabolic abnormalities in older adults at high risk for heart disease, according to a report in the December 8/22 issue of Archives of Internal Medicine, one of the JAMA/Archives journals.
The metabolic syndrome is a set of metabolic abnormalities that includes abdominal obesity and high cholesterol, high blood pressure and high blood glucose levels, all of which are risk factors for cardiovascular disease, according to background information in the article. “Development of the metabolic syndrome depends on a complex interaction between still largely unknown genetic determinants and environmental factors, including dietary patterns,” the authors write. A traditional Mediterranean diet—characterized by a high intake of cereals, vegetables, fruits and olive oil, a moderate intake of fish and alcohol and a low intake of dairy, meats and sweets—has been associated with a lower risk for metabolic abnormalities.
Jordi Salas-Salvadó, M.D., Ph.D., of the University of Rovira i Virgili, Spain, and colleagues assessed 1,224 participants in the PREDIMED (Prevencion con Dieta Mediterranea) study who were age 55 to 80 and at high risk for cardiovascular disease.
Exercise, calcium may lower metabolic syndrome risk
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Regular exercise and a calcium-rich diet could be two ways to help lower the risk of metabolic syndrome, according to a new study.
Metabolic syndrome refers to a cluster of risk factors for diabetes and heart disease—including abdominal obesity, high blood pressure, high blood sugar, low levels of “good” HDL cholesterol and high triglycerides (another type of blood fat). The syndrome is typically diagnosed when a person has three or more of these conditions.
In the new study, of more than 5,000 Illinois adults, researchers found that metabolic syndrome was less common among those who got the recommended amounts of exercise and dietary calcium.
People wasting billions of dollars on ‘quack’ health food products
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Globally every year, obese people waste billions of pounds on food products that ‘imply’ that they aid weight loss, but are totally ineffective, says a nutritional expert on bmj.com today.
Professor Lean from the University of Glasgow, is hopeful that a new European Union (EU) Directive on Unfair Commercial Practices, adopted this year in UK, will finally protect vulnerable consumers who are tricked into to buying useless food products or supplements in attempts to combat their disease.
Unlike medicines, food products that are marketed for health reasons are not subject to the same stringent research trials and control, and consumers are often misled.
