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What is the link between ejaculation and lower chances of prostate cancer?

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Research suggests that the more often men ejaculate, the less likely they are to have prostate cancer.

A major study found that guys who did it the most (at least 21 times a month) had about a 20% lower chance of prostate cancer, compared with those who did it less (4 to 7 times a month). Experts aren’t sure why more ejaculations from sex and masturbation help prostate health. Some believe that it can flush out harmful chemicals that might build up in semen.

SOURCES:

European Urology : "Ejaculation Frequency and Risk of Prostate Cancer.”

Harvard Health Publications, Harvard Medical School: “Ejaculation Frequency and Prostate Cancer,”  "Does frequent ejaculation help ward off prostate cancer?"

Sexual Medicine Reviews : "Evidence for Masturbation and Prostate Cancer Risk: Do We Have a Verdict?"

Medscape: "Best Evidence Yet! Ejaculation Reduces Prostate Cancer Risk,” “Study: Ejaculate More, Have Less Prostate Cancer Risk.”

Urologic Oncology : "Ejaculatory frequency and the risk of aggressive prostate cancer: Findings from a case-control study."

Journal of Sexual Medicine : “The Relative Health Benefits of Different Sexual Activities,” “Is Sex Just Fun? How Sexual Activity Improves Health.”

Reviewed by Laura J. Martin on June 30, 2017

SOURCES:

European Urology : "Ejaculation Frequency and Risk of Prostate Cancer.”

Harvard Health Publications, Harvard Medical School: “Ejaculation Frequency and Prostate Cancer,”  "Does frequent ejaculation help ward off prostate cancer?"

Sexual Medicine Reviews : "Evidence for Masturbation and Prostate Cancer Risk: Do We Have a Verdict?"

Medscape: "Best Evidence Yet! Ejaculation Reduces Prostate Cancer Risk,” “Study: Ejaculate More, Have Less Prostate Cancer Risk.”

Urologic Oncology : "Ejaculatory frequency and the risk of aggressive prostate cancer: Findings from a case-control study."

Journal of Sexual Medicine : “The Relative Health Benefits of Different Sexual Activities,” “Is Sex Just Fun? How Sexual Activity Improves Health.”

Reviewed by Laura J. Martin on June 30, 2017

NEXT QUESTION:

How often should men have sex or ejaculate to help prevent prostate cancer?

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