In yet another blow to the $28 billion vitamin industry, a US task force on Monday urged against taking Vitamin E and beta-carotene to prevent heart disease or cancer.

The findings are based on a systematic review of scientific studies which found that Vitamin E does not help -- and that beta-carotene supplements could actually do more harm than good.
"Beta-carotene can be harmful because it increases the risk of lung cancer in people who are already at increased risk for the disease," said Task Force co-chair Michael LeFevre.
With regard to other multivitamins, including single or paired supplements, there was not enough evidence to say whether they help or harm one's chances of getting heart disease or cancer, the task force said.
Despite numerous warnings about the unproven effects of vitamins, consumers continue to believe in them, with about half of US adults saying they take at least one dietary supplement and one-third reporting they take a multivitamin regularly.
The task force's recommendations apply to healthy adults who have no special medical concerns.
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Pregnant women are advised to take prenatal vitamins with folic acid according to their doctors' advice, and seniors at risk of falling are urged to take vitamin D for bone health.
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"Cardiovascular disease and cancer have a significant health impact in America, and we all want to find ways to prevent these diseases," said Task Force chair Virginia Moyer.
"However, we found that there is not enough evidence to determine whether taking single or paired nutrients or a multivitamin helps to prevent cardiovascular disease or cancer."
The task force is an independent panel of medical experts from across the United States.
Its recommendation statement was published in the February 24 edition of the Annals of Internal Medicine.
Source-AFP