No association between regular multivitamin use and risk of prostate cancer, but increased risk with excessive use

American researchers have found no association between regular multivitamin use (up to seven times per week) and risk of prostate cancer. However, they did find an association between excessive multivitamin use (more than seven times a week) and risk of prostate cancer. The positive association between excessive multivitamin use and risk of prostate cancer were strongest in men with a family history of prostate cancer or who were also taking individual selenium, beta-carotene, or zinc supplements.

Authors conclusions ‘Regular multivitamin use is not associated with the risk of early or localized prostate cancer. The possibility that men taking high levels of multivitamins along with other supplements have increased risk of advanced and fatal prostate cancers is of concern and merits further evaluation.’

Source: http://jnci.oxfordjournals.org/cgi/content/full/99/10/754#TBL5