Vitamins E and C in the Prevention of Prostate and Total Cancer in Men: The Physicians’ Health Study II a Randomized Controlled Trial

摘要

ContextMany Americans take vitamins in the hopes of preventing chronic diseases such as cancer, and vitamins E and C are among the most common individual supplements. A large-scale randomized trial suggested that vitamin E may reduce risk of prostate cancer; however, few trials have been powered to address this relationship. No previous trial in men at usual risk has examined vitamin C alone in the prevention of cancer.