The case against vitamins -
Every day, millions of Americans gobble down fistfuls of vitamins in a bid to ward off ill health. They swallow megadoses of vitamin C in hopes of boosting their immune systems, B vitamins to protect their hearts and vitamin E, beta carotene and other antioxidants to fight cancer.
But a troubling body of research is beginning to suggest vitamin supplements may be doing more harm than good. Over the past several years, studies that were expected to prove dramatic benefits from vitamin use have instead shown the opposite. Beta carotene was seen as a cancer fighter, but it appeared to promote lung cancer in a study of former smokers. Too much vitamin A, sometimes taken to boost the immune system, can increase a woman's risk for hip fracture. A study of whether vitamin E improved heart health showed higher rates of congestive heart failure among vitamin users
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