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Vitamin D benefit

Vitamin D promotes retention and absorption of calcium and phosphorus, primarily in the bones. Taking too much vitamin D (above 2,000 IU a day) can be toxic.

Reviewed last on: 3/7/2009
Linda Vorvick, MD, Family Physician, Seattle Site Coordinator, Lecturer, Pathophysiology, MEDEX Northwest Division of Physician Assistant Studies, University of Washington School of Medicine. Also reviewed by David Zieve, MD, MHA, Medical Director, A.D.A.M., Inc.

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