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Vitamin E’s Secret Weapon Against Prostate Cancer

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Whether taking vitamin E cuts the risk of prostate cancer is uncertain. Some studies suggest it does; others do not.

To find out for sure, the National Institutes of Health is sponsoring a study, giving either vitamin E, selenium or both to a large group of American men. The results are not expected until 2011.

In the meantime, a team of the NIH-funded investgators at the University of Rochester have discovered a new important way that vitamin E can interrupt the progress of prostate cancer, adding credibility to its cancer-fighting potential.

The researchers have identified a protein called alpha associated protein (TAP) that works with vitamin E to boost its ability to block the growth of prostate cancer. The protein facilitates the transport of vitamin E into prostate tissue and increases the vitamin’s capacity to suppress the proliferation of cancer cells.

In previous research, the investigators have found that vitamin E disrupts the production of prostate-specific antigen (PSA),  a key player in the development and progression of prostate cancer.

“No one really knows how vitamin E works,” said co-author of the new study, Edward Messing, but discovery of the new protein could be a clue to vitamin E’s anti-cancer effect.  TAP also has anti-cancer activity, and could be a biomarker for the progression of prostate cancer.

About 232,000 new cases and 30,000 deaths in the US are expected this year from prostate cancer.  (Source:  Ni J Wen X, Cancer Research 2005 Nov 1:65(21): 9807-16)


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Article updated on: November 27th, 2005

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One Response to “ Vitamin E’s Secret Weapon Against Prostate Cancer ”

  1. [...] about two new studies on dietary supplements. One of the studies examined the relationship between vitamin E and prostate cancer and concluded that men who take vitamin E have a 17% increased risk of developing the disease. [...]