Note: These resources are provided as an electronic supplement to an article in the March 2009 issue of NWA World Traveler.
Donald Hensrud, M.D., a Mayo Clinic nutrition and preventive medicine specialist, discusses the scientific evidence behind various vitamin supplements:
Here is a link to a fact sheet from the NIH on vitamin D.
For further information, see the Drugs & Supplements section on MayoClinic.com, including specific information on vitamins A, D and E.
