Recent studies have offered good news and bad news to the millions of Americans who regularly take vitamins and dietary supplements. Some, such as vitamin D, were associated with lower risk of disease, while others, such as vitamin E and multivitamins, were associated with increased risks. But the studies were observational and did not account for underlying disease or other reasons for taking vitamins, said Dr. David Katz at Yale's prevention research center. Doctors interviewed by MedPage Today and ABC News generally agree that vitamin supplements are appropriate for treating specific deficiencies but should not be used to compensate for unhealthy diets.
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