Data on the value of dietary supplements in reducing the risk of developing prostate cancer have been conflicting; however, two large randomized trials have indicated that prostate cancer risk is not reduced by the long-term use of vitamin E, vitamin C or selenium supplements.
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Allen, N., Key, T. Neither vitamin E nor selenium prevent prostate cancer. Nat Rev Urol 6, 187–188 (2009). https://doi.org/10.1038/nrurol.2009.47
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DOI: https://doi.org/10.1038/nrurol.2009.47
