December 1, 2010 |
A team of experts convened by the Institute of Medicine sought Tuesday to douse growing concerns that North Americans are deficient in two key nutrients ? calcium and vitamin D ? and that they risk higher rates of a wide range of chronic diseases and cancers as a result. The panel concluded that "with few exceptions, all North Americans are receiving enough calcium and vitamin D" from the foods they eat ? many of which have been fortified with both nutrients. For all but a few, adding more of those nutrients in pill form would be useless at best and, at worst, would risk harm, added the report, which was two years in the making.
November 14, 2010 |
A vitamin D deficiency doubles the risk of fatal strokes in whites, but has no effect on the risk in blacks, even though blacks are more likely to have vitamin D deficiencies and are 65% more likely to die from strokes, researchers said Sunday. The results were puzzling, said Dr. Erin Michos of the Johns Hopkins School of Medicine in Baltimore. "We thought maybe the lower vitamin D levels might actually explain why blacks have higher risks for strokes," she said. Stroke is the third leading cause of death in the United States, killing more than 140,000 Americans annually and permanently disabling more than half a million.
November 8, 2010 |
Forgot where you left your keys? The name of your neighbor's kid? Whether you locked the car? Anyone looking for an easy way to boost brain power is likely to come across an increasingly common piece of advice: Up your intake of B vitamins. The vitamins ? including folic acid and vitamins B6 and B12 ? are often touted as a way to improve memory and stave off cognitive decline. The claims are based on the finding that levels of the vitamin are low in people with various forms of cognitive impairment, including dementia and Alzheimer's disease.
October 18, 2010
People with a rare, genetic condition that causes skin cancer usually studiously avoid sunlight in order to reduce their cancer risk. But, in doing so, these people increase their risk of vitamin D deficiency, researchers reported Monday. Basal cell nevus syndrome causes people to develop basal cell cancer lesions as early as adolescence. But in a study of 41 people with the condition, more than half were found to be deficient in vitamin D. Vitamin D is synthesized in the skin from exposure to sunlight.
October 16, 2010 |
Want to manage your weight, strengthen and whiten your teeth, increase your vitamin intake? Just bored out of your mind? Have some gum. Candy manufacturers are rolling out gums for all occasions to entice people to chew more frequently. Some of the gums seem to have been pulled from science fiction, or at least Willy Wonka's factory. Kraft Foods Inc.'s Stride Shift, for instance, changes flavor while you're chewing. Trident Vitality contains vitamin C for those who can't be bothered to eat fruit.
October 11, 2010 |
It's what Dr. Jean Romagnoli doesn't know about the health of the 33 trapped miners that worries him. As chief medical officer of the team rescuing the miners stuck underground since Aug. 5, Romagnoli has been monitoring their health and preparing for their reentry to life above ground, which could happen as early as Wednesday. Once rescued, they will receive immediate attention at a makeshift clinic near the mine entrance and then two days of treatment at a hospital in nearby Copiapo.
September 9, 2010
High doses of B vitamins can reduce shrinkage of the brain that is frequently a precursor of Alzheimer's disease, British researchers reported Wednesday. In the best circumstances, the supplements reduced shrinkage by as much as 50%, and researchers hope that this may mean that the vitamins can delay the onset of Alzheimer's. A longer trial is now being planned to determine if that is the case. The results are all the more remarkable because of the widely publicized failures of many experimental Alzheimer's treatments.
September 2, 2010 |
Consumers who buy organic fruits and vegetables because they think they're tastier, more nutritious and better for the environment are getting at least some of what they're paying for, according to a study published online Wednesday. The finding is based on a detailed comparison of organic and conventional strawberries from 13 pairs of neighboring farms in Watsonville, Calif., where 40% of the state's strawberry crop is produced. A team of ecologists, food chemists, soil scientists and other experts analyzed a variety of factors before concluding that the organic berries — and the dirt they were raised in — were superior.
CALIFORNIA | LOCAL
August 31, 2010 |
Frank C. Garland, the UC San Diego epidemiologist who, with his brother Cedric, was the first to demonstrate that vitamin D deficiencies play a role in cancer and other diseases, died Aug. 17 at UCSD Thornton Hospital. He was 60 and had been suffering for nearly a year from cancer of the esophageal junction. "Over the past three decades, the Garlands' seminal hypothesis has been largely confirmed by numerous additional studies," Dr. Edward Giovannucci of the Harvard School of Public Health said in a statement.
August 30, 2010
HIV-positive women who are breastfeeding should not be given vitamin A supplements because it increases the risk of transmitting the AIDS virus to their infants, researchers said Thursday. Mother-to-child transmission of HIV has been largely controlled in the United States and other developed countries through the use of antiretroviral drugs, but is a major problem in the developing world. In 2008, there were 430,000 new HIV infections in infants, most of them in sub-Saharan Africa, and breast feeding accounted for more than 95% of them.