Health

Vitamin D: How Much is Enough?
August 28, 2007 07:12 AM - Harvard Public Health Review

While vitamin D’s role in strengthening bones is well established, its links to cancer and immune-system malfunctions have only recently emerged. At the Harvard School of Public Health, nutrition experts say large segments of the population don’t get enough vitamin D and are urging the U.S. Food and Drug Administration to raise the daily recommended dose, from 400 international units to 800. For an update on what’s known so far about this important nutrient, the Harvard Public Health Review spoke with HSPH Professor of Nutrition and Epidemiology Edward Giovannucci.

Stem Cells Repair Rat Hearts Damaged By Heart Attack
August 27, 2007 08:43 PM - Justin Reedy , University of Washington

University of Washington - Researchers were successful in getting human-derived heart muscle cells to graft into rat hearts and thrive alongside the rat's normal heart muscle cells. Researchers were also able to use human-derived stem cells to grow a heart muscle graft in a rat heart damaged by a heart attack. The human-derived cells incorporated with scar tissue and regular heart muscle cells.

Scientists Say "Fat Eggs" Cause Of Infertility In Obese Women
August 27, 2007 07:55 PM - University of Adelaide

AUSTRALIA University of Adelaide - A University of Adelaide researcher has discovered scientific evidence that obesity is a key factor in infertility - because of how it affects women's eggs. While obesity has long been thought to be a major factor in couples' inability to conceive, this is the first time the effects of obesity on the egg have been discovered.

100-Pound Weight Loss Possible With Behavioral Changes
August 27, 2007 07:40 PM - Paul Schaefer, ENN

Lexington, KY - A new study indicates that with behavior change, humans can loose a lot of weight, in a relatively short period of time. The study tracked 118 men and women over nine years. Those 63 men and 55 women were part of a study led by Dr. James Anderson, head of the UK College of Medicine Metabolic Research Group. The average beginning weight of study participants was 353 pounds. The average weight loss was 134 pounds in 44 weeks.

Kids Burn More Fat, Need More Fat, Than Adults
August 27, 2007 07:34 PM - Reuters Health

NEW YORK - Children burn more body fat day-to-day than adults do, underscoring their need for a little extra fat in their diets, according to researchers. Though many adults try to limit their fat intake for the sake of their hearts and waistlines, experts recommend that parents allow more leeway in their children's diets.

U.S. Seeks Home For Research On Fearsome Diseases
August 27, 2007 06:12 PM - Charles Abbott, Reuters

WASHINGTON - A federal laboratory off Long Island, known as the "Alcatraz for animal disease," may move to the U.S. mainland as part of a new $450 million research center. Plans for the next-generation National Bio and Agro-Defense Facility, slated to go online by 2013, include biosafety labs where scientists, clad in outfits resembling spacesuits and tethered to air supplies, would research diseases that can spread to people from animals.

Study: Viagra Also Increases "Cuddle Chemical"
August 27, 2007 05:48 PM - Paul Schaefer, ENN

University of Wisconsin-Madison - A new study finds Viagra increases the release of a key reproductive hormone. Scientists found that the little blue pill may do more than get the blood pumping. Sildenafil — the generic name for Viagra — also increases release of a reproductive hormone in rats, according to a new study. The finding is the first indication of a chemical mechanism through which erectile dysfunction drugs like Viagra may have physical effects besides increasing blood flow to sexual organs, says study author Meyer Jackson, a physiology professor at the UW-Madison School of Medicine and Public Health.

New Study: No Link Between Night Shift Work and Cancer Risk
August 27, 2007 03:57 PM - Ohio State University

COLUMBUS , Ohio — Working the night shift doesn't appear to increase the risk of developing cancer, suggests the findings of a new study of Swedish workers.

Dunkin' Donuts Cuts Trans Fat from Menu
August 27, 2007 12:25 PM - Reuters

NEW YORK - Restaurant company Dunkin' Brands Inc. said on Monday that all menu offerings in its Dunkin' Donuts restaurants will have zero grams of artery clogging trans fat by October 15 this year. The company also said all ice cream products at its Baskin-Robbins chain will have zero grams trans fat by January 1, 2008. Privately held Dunkin' Donuts, which has tested over 28 alternative oils since 2003, said it has already tried trans fat free doughnuts in about 400 restaurants throughout the United States, over a period of four months.

Age-related Vision Loss - Genes Vs Lifestyle
August 27, 2007 10:25 AM - Harvard Public Health Review

Nature versus nurture. When it comes to health, both exert powerful influence. To what extent does a particular disease—diabetes in children, say, or cancer in the elderly—arise from genetic baggage beyond our control, and to what degree does it result from modifiable environmental and “lifestyle” choices? While most disorders result from a combination of both genetic and environmental factors, researchers say parsing out the roles of these two players is complicated business.

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