Prostate cancer is the most common male cancer in the UK. There are 41,700 new cases each year and of these, 10,800 men die from it.
It has been found that the more men sleep around the less at risk they are of getting prostate cancer, reducing the likelihood of developing it by over a third.
Men who have slept with 20 women or more have reduced their chances by 28% of getting cancer.
Those who abstain from regular sex double the risk of the disease that kills 11,000 Brits each year.
The Journal of Cancer Epidemiology has published that regular intercourse flushes out the cancer causing chemicals, given that the prostate secretes the bulk of this fluid in the semen. It also reduces calcifications in the gland that have been linked to cancer.
This is the first study to suggest that masturbation regularity, STIs, the age at which a man loses his virginity and the amount of sex does not have an effect, it’s the number of female partners that makes the difference.
Professor Marie-Elise Parent replied: "We are not there yet," when she was asked if this meant that public health authorities would be prescribing men to sleep with lots of women.
The study of 3,000 men revealed that those who had slept with more than 20 women in their lifetime had dramatically reduced their risk of all kinds of prostate cancer by a third and the more aggressive forms by 19%.
Professor Marie-Elise Parent, of the University of Montreal, said: "It is possible that having many female sexual partners results in a higher frequency of ejaculations, whose protective effect against prostate cancer has been previously observed in cohort studies."
Homosexuals, however, who had been with 20 or more partners were more at risk of cancer than those who have never slept with the same sex.
Tagged in Cancer