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News about the sunshine vitamin isn't quite so sunny these days as vitamin D deficiencies are on the rise. Learn about why vitamin D is essential to your health and...

Those herbal pills you're taking may not contain what you think they do, according to tests run on supplements sold at four popular stores.

Nearly half the U.S. population takes vitamins, according to the Centers for Disease Control and Prevention. But do we really need to take vitamins, and are we taking the right...