Men can reduce their risk of prostate cancer by having orgasms more often, according to a decades-long study.
The official journal of the American Urological Association,
The Journal of Urology, which published the study's findings in 2015, revealed that the study's authors found more frequent ejaculations corresponded to fewer cases of the most common form of cancer among men.
Men in the study who averaged at least 21 orgasms per month were 20 percent less likely to develop prostate cancer than men who ejaculated just four to seven times a month, the study found, raising the possibility that sexual activity works as a form of prostate cancer prevention,
Medical Daily reported on the study.
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The research involved almost 32,000 men who were first recruited in 1992 and asked to keep track of their sexual activity and prostate health and report back at regular intervals over time.
An earlier set of findings drawn from the same group, in 2004, also found a link between more orgasms and fewer cases of prostate cancer. But that 2004 study,
published in the Journal of the American Medical Association, concluded that on balance "ejaculation frequency is not related to increased risk of prostate cancer."
The updated study drew on an extra decade's worth of interviews with the men, and yielded "particularly encouraging" results, according to lead researcher and epidemiologist Jennifer Rider of Harvard Medical School and Brigham and Women's Hospital.
"These findings support a role for ejaculation frequency throughout adult life in the etiology of prostate cancer," the study's authors wrote.
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As to why, "Possible explanations include the release of beneficial hormones during orgasm and the flushing out of the prostate through the ejaculation itself,"
IFL Science reported on the 2014 study.
The study's authors cautioned that the results applied only to low-grade, localized forms of prostate cancer, and that frequency of orgasm did not lessen the chance of developing more lethal and virulent forms of the disease.
The authors found that while men have fewer orgasms as they age, the frequency of their ejaculations was linked positively to healthier body weight, increased physical activity, less consumption of alcohol and calories, fewer cases of sexually transmitted disease, and even lower divorce rates.
Those findings track with some reported in a 2006 book, "The Science of Orgasm," whose authors surveyed the existing research and concluded that "orgasms are good for your health, except in a small percentage of men (and perhaps women?) with heart disease."
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