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Report: Skip the Megadose of Vitamin D

(Nov. 30) -- Dietary guidelines being released today call for a slight increase in the amount of vitamin D people need every day for good health but warn against megadoses of the "sunshine vitamin," saying there's no proof they prevent cancer and that they could in fact be harmful. "More is not necessarily better," Dr....

Study Asserts a Dark Side to Calcium Supplements

(July 30) -- Calcium supplements, an oft-touted aid in the fight against bone loss and osteoporosis, might actually do more harm than good. That's the suggestion of a growing body of research, that applies only to supplements. The calcium derived from food products, like dairy, tofu and fortified cereals, carries myriad...