How often should men ejaculate, is a very good question. The answer is very clear. VERY FUCKING OFTEN. A daily ejaculation can lower a man’s risk of prostate cancer by 20%. Those who ejaculate 21 times a month or more cut their risk by 22%. This was compared to men who ejaculated up to 7 times a month. Research say orgasm flushes out cancer-causing chemicals and old cells. The researchers, from Harvard Medical School, did not explain why orgasms could lower prostate cancer risk. The researchers found that men in the 40-49 age bracket who ejaculate 21 or more times a month reduced their risk of prostate cancer by 22 per cent. Researchers at the University of Montreal had previously found men who have more than 20 a month slashed their risk of prostate cancer by 28 per cent. And the study also revealed that men who have slept with more than 20 women reduced their chances of getting the most aggressive tumours by 19 per cent. While celibacy, on the other hand, doubles the risk of the prostate disease. The research was published in the journal Cancer Epidemiology. The study followed almost 32,000 healthy men for 18 years, 3,839 of whom later were diagnosed with prostate cancer. Men were asked about their average monthly frequency of ejaculation between the ages of 20 to 29, 40 to 49, and in 1991, the year prior to the questionnaire. They found that the more frequently a man ejaculated throughout his life, the lower his risk of prostate cancer at all three of these points in time.