SANANTONIO -- Taking vitamin E may raise a man s risk of prostate cancer.

San Antonio researchers involved in the study call the findings profound.

New results from a study of more than 35,000 men reveal that taking vitamin E increases the risk of prostate cancer among healthy men by 17%.

Men in the study, including some from San Antonio, were taking vitamin E to see if the powerful antioxidant might decrease the risk of developing prostate cancer.

Now, there s evidence that it does not help prevent the cancer, but actually increases the risk.

The results are published in today s Journal of the American Medical Association.

Dr. Ian Thompson of San Antonio s Cancer Therapy and Research Center said the finding is important.

Until you actually run studies like the study we ran, until you run those studies you don t know, Thompson stated. And to assume that something can t hurt you and that it might help may not be the right assumption.

I feel like it may have helped that I was involved and that there were enough people involved to get these statistics for knowing that vitamin E may be causing cancer, added study volunteer Dean Byers.

Researchers call these new findings substantial since more than half of men over 60 take vitamin E supplements.

They have some decisions to make about whether they want to continue popping those pills.

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