Vitamin Boost

Vitamin Boost

From muscle strength to immunity, scientists find new vitamin D benefits

By Janet Raloff, 15:51 PM April 15, 2008

First in a two-part series. Part II: "Vitamin D: What's Enough?" is available at Vitamin D: What's Enough?.

The story of vitamin D would appear simple. Take in enough sun or drink enough fortified milk to get the recommended daily amount, and you'll have strong bones. Take a supplement, if you want insurance. But recent studies from around the world have revealed that the sunshine vitamin's role in health is far more complex. More than just protecting bone, vitamin D is proving to preserve mu...

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