Ejaculation Frequency and Risk of Prostate Cancer A Systematic Review

Abstract

Aim: The aim is to summarize the association between ejaculation frequency and risk of prostate cancer. Methods:The Pub Med, EMBASE and Web of Science were searched to identify articles about ejaculation frequency and risk of prostate cancer without date or language restrictions (last search up to April,2016).We included prospective cohort studies about ejaculation frequency and risk of prostate cancer. We only did a descriptive analysis because of without suitable data. Results:The result of descriptive analysis indicated that higher ejaculation frequency is associated with reducing risk of prostate cancer and lower ejaculation frequency is not associated with reducing risk of prostate cancer. Conclusion:This systematic review showed that higher ejaculation frequency shows beneficial effect in decreasing risk of prostate cancer and lower ejaculation frequency shows no effect in decreasing risk of prostate cancer. Studies with high methodological quality are required to confirm these findings.