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Russell Greenfield, M.D. is Assistant Clinical Professor with The UNC-Chapel Hill School of Medicine,and Visiting Assistant Professor at The University of Arizona College of Medicine. He was the founding medical director of Carolinas Integrative Health, a freestanding center in Charlotte, NC owned and operated by the Carolinas HealthCare System.

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Features by Dr. Russell Greenfield

Does taking vitamin D help ward off the flu?

You may have heard that vitamin D, the “sunshine vitamin,” when taken in sufficient amounts may provide added protection against wintertime colds and the flu. Is it true? Physician Russell Greenfield explains.
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