Researchers at Johns Hopkins are reporting what is believed to be the first conclusive evidence in men that the long-term ill effects of vitamin D deficiency are amplified by lower levels of the key sex hormone estrogen, but not testosterone. In a national study in 1010 men, to be presented Nov.

With skin cancer rates on the increase, most individuals know the importance of applying sunscreen regularly, but in a recent literature study published in the July/August issue of Sports Health: A Multidisciplinary Approach, athletes may be even more at risk for developing the deadly disease. "Studies further confirm that although exposure to the sun or UV light may help maintain vitamin D levels, exposure also results in a higher risk for developing skin cancers.

Serum levels of vitamin D in more than 600 Costa Rican children were inversely linked to several indicators of allergy and asthma severity, including hospitalizations for asthma, use of inhaled steroids and total IgE levels, according to a study that will appear in the first issue for May of the American Journal of Respiratory and Critical Care Medicine.

According to a recent study in the Archives of Internal Medicine, 75 percent of Americans do not get enough Vitamin D. Researchers have found that the deficiency may negatively impact immune function and cardiovascular health and increase cancer risk. Now, a University of Missouri nutritional sciences researcher has found that vitamin D deficiency is associated with inflammation, a negative response of the immune system, in healthy women.

According to a recent study in the Archives of Internal Medicine, 75 percent of Americans do not get enough Vitamin D.