Prostate cancer remains a mystery. No one knows for certain what causes it, and because the prostate is an internal organ, it is often detected late.
But researchers at Harvard noticed something: the gland produces between 20 % and 30 % of seminal fluid. So they wondered whether sexual activity might have something to do with it. To find out, they surveyed 29.342 men between the ages of 46 and 81, who reported how many times they ejaculated in their youth, in middle age, and over the past year.
They counted everything: sexual intercourse, masturbation, and nocturnal emissions. When they compared the data, the result was clear. Those who ejaculated 21 times or more per month had 31 % lower odds of developing prostate cancer than those who did so between 4 and 7 times.

Another study conducted in Australia with 2.338 men found a similar trend. Participants who ejaculated five or more times per week in their 20s had about a one-third lower risk of prostate cancer than those who did so less frequently.
But keep in mind that the results themselves point to a statistical association, not a guarantee of prevention.

The number “21” should not be understood as a medical prescription or a mandatory target for preventing the disease, but it could help you.
How many people knew that something so commonplace could be related to prostate health?
