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Vitamin D: why we all need more.

Better Nutrition

| February 01, 2007 | Tweed, Vera | COPYRIGHT 2007 PRIMEDIA Intertec, a PRIMEDIA Company. All Rights Reserved. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan.  All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)Copyright

Are you getting enough vitamin D? Probably not, according to the latest research. This question-and-answer format provides a comprehensive guide to supplementing with the "sunshine vitamin"

Like Clark Kent, vitamin D accomplishes more than one might expect. And like the comic book character's heroic persona, the vitamin can save lives.

In addition to helping us use calcium for healthy bones, vitamin D protects against a host of maladies. A study published inn Photochemistry and Photobiology estimated that up to 63,000 people in the US die from cancer each year because of inadequate vitamin D.

Lack of the nutrient is quite pervasive. Research published in the Mayo Clinic Proceedings found that 36 percent of healthy young adults and 57 percent of medical inpatients were deficient in vitamin D. Another study, published in the Journal of Nutrition, found that only 4 percent of adults over age 50 obtained sufficient vitamin D from food.

Why Are We Deficient in D?

There are several factors that contribute to our shortfall:

* We shun the sun, which triggers vitamin D production in our bodies.

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