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Member Research & Reports

Member Research & Reports

BU: Ejaculation May Lower Prostate Cancer Risk

Men who report a higher frequency of ejaculating as adults are less likely to be subsequently diagnosed with prostate cancer (PCa), a new study led by a Boston University School of Public Health (BUSPH) researcher confirms.

In an article in the journal European Urology, Dr. Jennifer R. Rider, assistant professor of epidemiology at BUSPH, and colleagues found that an ejaculation frequency of 21 or more times per month at ages 20–29 years or 40–49 years is associated with a significant, 19 percent and 22 percent decreased risk of a PCa diagnosis, respectively, compared with a frequency of four to seven times per month in adjusted analyses. Similar results were found when the analysis was restricted to men who had undergone prostate specific antigen (PSA) screening, which is strongly related to prostate cancer detection.

“More frequent ejaculation in the absence of risky sexual behaviors could represent an important means of reducing the profound medical costs and physical and psychological side effects of unnecessary diagnosis and treatment of low-risk tumors, even though it appears to be less strongly associated with aggressive disease,” the researchers concluded in their online report.

“This large prospective study provides the strongest evidence to date of a beneficial role of ejaculation in prevention of PCa, a disease for which relatively little is understood about etiology generally, and knowledge of modifiable risk factors is particularly scant.”

To read more about the study, go to: