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Vitamin D reduces risk for MS

The risk for multiple sclerosis (MS) decreased significantly as the level of 25-hydroxyvitamin D increased in a new study from Harvard University in Boston, Massachusetts. Doctors examined stored blood samples from more than 7 million U.S. military personnel and found that those who had the highest blood-fluid (serum) levels of vitamin D were 62% less likely to have MS than those who had the lowest levels. MS, a disease in which the immune system attacks rather than protects the body, is more prevalent in northern latitudes where there is relatively little sunlight—the main source of vitamin D—during the winter. This is the first large-scale study of vitamin D and MS.

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