A new study out of Harvard University found that ejaculating 21 times in a month can significantly reduce the risk of prostate cancer in men.
The study compared those who ejaculated 21 times in a month to those who only did four to seven times in a single month and found that the risk of prostate cancer was significantly lower for the former group. The study found the risk was reduced regardless of whether men ejaculated through masturbation or sex.
Researchers are not ready to speculate on why ejaculation protects men from prostate cancer but recent research shows that it helps exclude cancer-causing glands and infections. Ejaculation is also known to reduce inflammation which is another known cause of prostate cancer.
The Harvard University study analyzed 31,925 healthy men who completed a questionnaire about ejaculation frequency since 1992. The ages of the men assessed were between 20 to 29 and 40 to 49.
Ejaculation is broadly defined in the study and refers to both climaxes reached through sex or masturbation. The study followed the men until 2010 by which time 3,839 participants were diagnosed with prostate cancer.
Researchers gave an interview in the journal of European Urology saying, "We found that men who reported higher ejaculation rates compared with lower ejaculatory frequencies in adulthood were less likely to be diagnosed with prostate cancer."
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