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Dieting

Optimism linked to healthier eating among women

Dieting • • Gender: FemaleMar 28 14

Optimism linked to healthier eating among women

Women with a sunny disposition may also have an easier time adopting healthy habits, according to a new study.

Researchers found that women who were more optimistic were better able to follow healthy eating guidelines, both when they were instructed to do so and when they chose to make changes on their own.

The authors noted that the biggest help for making diet improvements is not necessarily optimism itself, but the skills that tend to go with it.

“It’s not just having a sunny outlook - rather, this is a marker of other things people do,” said Melanie Hingle, a dietician at the University of Arizona in Tucson. She led the new study, which was published in the Journal of the Academy of Nutrition and Dietetics.

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Wayne State cholesterol study shows algal extracts may counter effects of high fat diets

Dieting • • Fat, DietaryDec 21 13

Wayne State cholesterol study shows algal extracts may counter effects of high fat diets

Health Enhancement Products, Inc. (OTC.BB:HEPI.OB – News), in conjunction with Wayne State University’s Department of Nutrition and Food Science in the College of Liberal Arts and Sciences, announces the publication of a scientific article in the Journal of Nutrition & Metabolism, “ProAlgaZyme sub-fraction improves the lipoprotein profile of hypercholesterolemic hamsters, while inhibiting production of betaine, carnitine, and choline metabolites.”

The paper describes the beneficial effects of the Company’s proprietary algal culture in supporting healthy cholesterol balance. The fractions and isolates derived from the Company’s proprietary algae culture “PAZ” (formerly referred to as “ProAlgaZyme”) were shown to be a viable candidate for supporting healthy cholesterol balance, in sharp contrast to the control group. The project, led by Smiti Gupta, Ph.D., associate professor of nutrition and food science at Wayne State University, involved monitoring lipid metabolism in a widely accepted animal model for investigating human lipid metabolism. The scientific paper describes a follow-up study to the original research conducted by Gupta. In the previous study, published in 2012, the test group consumed algal-infused water while simultaneously consuming a high fat diet. The algal fractions and isolates were shown to have a preventative beneficial effect against the negative effects of the high-fat diet on the animal’s plasma cholesterol levels. Specifically, the extracts significantly increased high density lipoprotein cholesterol (HDL-C, aka “good” cholesterol), and reduced non-HDL cholesterol (“bad” cholesterol) and the ratio of total cholesterol/HDL-C, despite the ongoing consumption of high fat food.

The test subjects in the recent study consumed a high fat diet for four weeks, at which point they became hypercholesterolemic (i.e. they had high plasma cholesterol levels.). Subsequently, the animals were given the extracts for 0 (untreated), 3, 7, 10, 14, and 21 days while still on the high fat diet. The results indicated that the PAZ extracts may be a useful option for improving the plasma cholesterol profile despite the hypercholesterolemic state induced by a high fat diet.

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Reducing the salt in bread without losing saltiness, thanks to a texture trick

Dieting • • Food & NutritionNov 20 13

Want to make bread taste pleasantly salty without adding more salt? Change the bread’s texture so it is less dense, say scientists. They report in ACS’ Journal of Agricultural and Food Chemistry that simply making the pores, or holes, larger can make people perceive bread as having saltier taste. The process could become a new strategy for reducing salt intake, which is a risk factor for high blood pressure and heart disease.

Peter Koehler and colleagues explain that every day, people in industrialized countries consume, on average, twice as much salt as the World Health Organization recommends. Much of that salt - 35 percent in the United Kingdom and about 25 percent in Germany - comes from bread, which for millennia has ranked as one of the world’s most ubiquitous foods. Cutting dietary salt would reduce people’s risk for developing high blood pressure, which has been diagnosed in 40 percent of adults aged 25 and older worldwide, and heart disease, which was the cause of 30 percent of all deaths in 2008. But the big question is how to do it in a palatable way. Researchers have tried different methods, such as using salt substitutes, but only to limited effect. Studies on cheese and gels has shown that changing texture can make a product taste salty even if salt content is reduced, so Koehler’s team decided to see if this would work with bread.

To alter the texture of bread for the study, they baked bread using different proofing times. Proofing is when a baker lets the dough rise. Longer proofing times lead to softer breads with larger pores. The subjects in the study rated the fluffier bread with the longest proofing time as noticeably more salty, even though each bite actually contained less salt. “Appropriate modification of crumb texture thus leads to enhanced saltiness, suggesting a new strategy for salt reduction in bread,” say the researchers.

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Vitamin D deficiency ups heart disease risk

Dieting • • HeartSep 26 12

Low levels of vitamin D are associated with a markedly higher risk of heart attack and early death, according to a new research.

The study involved more than 10,000 Danes and was conducted by the University of Copenhagen and Copenhagen University Hospital.

Vitamin D deficiency has traditionally been linked with poor bone health. However, the results from several population studies indicate that a low level of this important vitamin may also be linked to a higher risk of ischemic heart disease, a designation that covers heart attack, coronary arteriosclerosis and angina. Other studies show that vitamin D deficiency may increase blood pressure, and it is well known that high blood pressure increases the risk of heart attack.

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Diet may treat some gene mutations

Dieting • • GeneticsApr 09 12

Scientists have moved a step closer to correcting some unhealthy gene mutations with diet, according to a new research report appearing in the April 2012 issue of the journal GENETICS. Researchers from the University of California, Berkeley, determined variations and responses to vitamin treatment in the human cystathionine beta synthase gene, which when defective, causes the disease homocystinuria, an inherited metabolic disorder sometimes treatable with vitamin B6. After the analysis, scientists correlated specific gene mutations with severity of the disease, ranging from perfectly healthy and functional to severe and untreatable. Although the current study focused on homocystinuria, testing the effects of naturally occurring gene variations using surrogate organism genetics can be applied to other inherited disorders, such as neural tube defect, cleft palate, and blindness.

“The era of personal genome sequences is upon us, but there is a growing gap between the ability to sequence human genomes and the ability to understand the significance of variation in genome sequences,” said Jasper Rine, Ph.D., the principal investigator of this research in the Department of Molecular and Cell Biology at the California Institute of Quantitative Biosciences at the University of California, Berkeley. “This study demonstrates one way to close the gap; the data separate gene variants into distinct classes, including a group amenable to dietary intervention.”

To make their determination, scientists “swapped” the cystathionine beta synthase gene of baker’s yeast with the gene from humans to test which variants were healthy, treatable, or untreatable with additional vitamin B6. As a result, the study clarified the function of 84 DNA sequence variants in this gene, which will help physicians more effectively treat patients based on their particular genotypes. In addition, this approach opens doors for future studies examining other human genes that similarly cross over between humans and yeast.

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Red meat is blamed for one in 10 early deaths

Dieting • • Food & NutritionMar 13 12

The Department of Health was last night urged to review its guidance on red meat after a study found that eating almost half the daily recommended amount can significantly increase the risk of dying early from cancer and heart disease.

Small quantities of processed meat such as bacon, sausages or salami can increase the likelihood of dying by a fifth, researchers from Harvard School of Medicine found. Eating steak increases the risk of dying by 12%.

The study found that cutting the amount of red meat in peoples’ diets to 1.5 ounces (42 grams) a day, equivalent to one large steak a week, could prevent almost one in 10 early deaths in men and one in 13 in women.

The scientists said that the government’s current advice that people should eat no more than 2.5 ounces (70 grams) a day, around around the level the average Briton already consumes, was “generous”.

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Mixed progress made by US government and schools to improve food marketing influencing children’s diets

Dieting • • Public HealthFeb 14 12

New research has found that the US government and schools have made mixed progress to comprehensively address food and beverage marketing practices that put young people’s health at risk. A comprehensive review published in the March issue of the American Journal of Preventive Medicine finds that public sector stakeholders have failed to fully implement recommendations from the Institute of Medicine (IOM) to support a healthful diet to children and adolescents.

“Evidence links the marketing of high-calorie, nutrient-poor branded food and beverage products to obesity rates. Our evaluation found that the prevailing marketing environment continues to threaten children’s health and the public sector has missed important opportunities to promote a healthful diet and create healthy eating environments,” says lead author Vivica Kraak, MS, RD, Research Fellow at Deakin University’s Population Health Strategic Research Center in Melbourne, Victoria, Australia.

In a study requested by Congress in 2004, the IOM determined that food marketing influences children and adolescents to prefer, request, and consume high-calorie and nutrient poor foods and beverages. In December 2005, an expert IOM committee issued a report with 10 recommendations to guide public- and private-sector stakeholders to promote healthy eating in children and adolescents. Kraak and colleagues Mary Story, PhD, RD, University of Minnesota School of Public Health, and Ellen A. Wartella, PhD, Northwestern University School of Communication, conducted a comprehensive literature review of the evidence to determine what progress had been made toward 5 of the report’s recommendations for the public sector. The other 5 recommendations directed at industry stakeholders, were examined in a separate publication released in September 2011. They evaluated 80 data sources, including published articles, enacted legislation, and media stories over 5 years (from late 2005 to early 2011). Their work was funded by Healthy Eating Research, a national program of the Robert Wood Johnson Foundation.

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Brain mechanisms link foods to rising obesity rates

Brain • • DietingFeb 07 12

An editorial authored by University of Cincinnati (UC) diabetes researchers to be published in the Feb. 7, 2012, issue of the journal Cell Metabolism sheds light on the biological factors contributing to rising rates of obesity and discusses strategies to reduce body weight.

According to the U.S. Centers for Disease Control, about one-third of U.S. adults are obese, a number that continues to climb.

“While we don’t usually think of it this way, body weight is regulated. How much we weigh is influenced by a number of biological systems, and this is part of what makes it so hard for people to lose weight and keep it off,” says Randy Seeley, PhD, Donald C. Harrison Endowed Chair, director of the Cincinnati Diabetes and Obesity Center and author on the paper along with Karen Ryan, PhD, an assistant professor in endocrinology, diabetes and metabolism at UC.

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Laughter And Chocolate Can Boost Heart Health

Dieting • • Food & NutritionAug 31 11

Maybe laughter really is the best medicine—especially if it’s taken with a dose of chocolate.

Two practically-too-good-to-be-true studies presented at the European Society of Cardiology’s conference in Paris have found that chocolate and laughter are both good for the heart.

While previous studies have found that stress can cause blood vessels to constrict, the first team of researchers, from the University of Maryland School of Medicine in Baltimore, wanted to find out if positive emotions had the opposite effect, lead researcher Dr. Michael Miller said in a release.

When they aired the opening clip of the drama “Saving Private Ryan,” volunteers responded with a constriction of the blood vessel linings, causing a reduction in blood flow. But when those same people watched clips of the comedy, “There’s Something About Mary,” the linings actually expanded.

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Summer Is the Season for Shaping Up: American Dietetic Association Spokespeople Review the Latest Diet and Lifestyle Books

DietingJul 13 11

With seemingly endless information about food and diets available today, it is easy to be overwhelmed with which plan is right for you. Whether it’s a pill, a cleanse, a fast-results diet or an entire lifestyle change, there is no shortage of products, programs and books that promise life-changing results when it comes to weight loss.

Do these plans work? Are they healthful? How can people tell the good advice from the bad? The American Dietetic Association is here to help.

“Every day, Americans are flooded with information about how to lose weight and feel great fast. While some of these products and programs offer sound nutrition information, others are gimmicks and can even be dangerous,” says registered dietitian and ADA Spokesperson Marjorie Nolan. “It is important for consumers to achieve a healthy weight in a way that is safe and provides their bodies with the nutrition they need to thrive. There is no miracle cure or overnight plan for healthy weight loss.”

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PBDEs can cause developmental malformations, changes in behavior and death

Dieting • • Psychiatry / PsychologyMay 24 11

A new study by Baylor University environmental health researchers found that zebra fish exposed to several different technical mixtures of polybrominated diphenyl ethers (PBDEs) - a common fire retardant - during early development can cause developmental malformations, changes in behavior and death.

The study will appear in the June issue of the journal Environmental Toxicology and Chemistry and is the first to test multiple PBDE mixtures for changes in behavior, physical malformations and mortality on zebra fish.

PBDEs are found in many common household products from blankets to couches to food wrappers. Lab tests have shown that PBDEs have been found in human breast milk and cord blood. Previous studies have showed children with high levels of PBDEs in their umbilical cord at birth scored lower on tests between one and six years of age. In 2006, the state of California started prohibiting the use of PBDEs.

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Pomegranate juice components inhibit cancer cell migration; in vivo testing planned

Cancer • • DietingDec 13 10

Researchers at the University of California, Riverside (UCR), have identified components in pomegranate juice that seem to inhibit the movement of cancer cells and weaken their attraction to a chemical signal that has been shown to promote the metastasis of prostate cancer to the bone, according to a presentation today at the American Society for Cell Biology’s 50th Annual Meeting in Philadelphia.

The researchers in the UCR laboratory of Manuela Martins-Green, Ph.D., plan additional testing in an in vivo model for prostate cancer to determine dose-dependent effects and side effects of the two components.

The effect, if any, of pomegranate juice on the progression of prostate cancer is controversial.

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The Not-so-Sweet Truth About Sugar- A Risk Choice?

Dieting • • Urine ProblemsNov 30 10

More and more people have become aware of the dangers of excessive fructose in diet. A new review on fructose in an upcoming issue of the Journal of the American Society of Nephrology (JASN) indicates just how dangerous this simple sugar may be.

Richard J. Johnson, MD and Takahiko Nakagawa, MD (Division of Renal Diseases and Hypertension, University of Colorado) provide a concise overview of recent clinical and experimental studies to understand how excessive amounts of fructose, present in added sugars, may play a role in high blood pressure, diabetes, obesity, and chronic kidney disease (CKD).

Dietary fructose is present primarily in added dietary sugars, honey, and fruit. Americans most frequently ingest fructose from sucrose, a disaccharide containing 50% fructose and 50% glucose bonded together, and high fructose corn syrup (HFCS), a mixture of free fructose and free glucose, usually in a 55/45 proportion.

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Moms’ mealtime tactics tied to kids’ eating habits

DietingNov 22 10

School-age children whose mothers tightly control their diets may be prone to overeating, while those with moms who pressure them to eat tend to be fussy about food, a new study finds.

The findings, published in the Journal of the American Dietetic Association, do not necessarily mean that parents’ mealtime strategies cause their children to overeat or become picky eaters.

In fact, the researchers say, it’s likely that parents who pressure or restrict are often reacting to their children’s eating habits.

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Use of omega-3 does not appear to reduce recurrence of atrial fibrillation

Dieting • • HeartNov 15 10

Although some data have suggested that omega-3 fatty acid supplements, such as from fish oil, may improve treatment of atrial fibrillation, a randomized trial with more than 600 patients finds that treatment with high-dose prescription omega-3 did not reduce the recurrence of atrial fibrillation over six months, according to a study that will appear in the December 1 issue of JAMA. The study is being released early online because it will be presented at the American Heart Association’s annual meeting.

“Atrial fibrillation (AF) is a highly prevalent disease that is responsible for reduced quality of life, costly hospitalizations, heart failure, stroke, and death. No current therapy, drug, device, or ablation [removal of tissue or cells] is uniformly effective, and several available therapies have the potential to cause harm. Consequently, useful alternatives are being sought,” the authors write. “Limited data from small trials suggest omega-3 polyunsaturated fatty acids may provide a safe, effective treatment option for AF participants.”

Peter R. Kowey, M.D., of the Lankenau Institute for Medical Research, Wynnewood, Pa., and colleagues conducted a randomized clinical trial to assess the efficacy of a pure prescription formulation of omega-3 fatty acids (prescription omega-3), at a dose considerably higher than what has been tested in previous trials, for preventing recurrent atrial fibrillation. The study included 663 U.S. outpatient participants with confirmed symptomatic paroxysmal (sudden attacks) (n = 542) or persistent (n = 121) AF, with no substantial structural heart disease, who were recruited from November 2006 to July 2009 (final follow-up was January 2010). Participants received prescription omega-3 (8 grams/day) or placebo for the first 7 days; prescription omega-3 (4 grams/day) or placebo thereafter through week 24.

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