However, having more than 20 male partners in one’s lifetime is associated with a two-fold higher risk of getting prostate cancer compared to those who have never slept with a man, according to researchers from the University of Montreal and Institut Armand-Frappier Research Centre (INRS) in Quebec.
To reach this conclusion, Marie-Elise Parent and Marie-Claude Rousseau, professors at University of Montreal’s school of public health, and their colleague Andrea Spence, analysed the Montreal study PROtEuS (Prostate Cancer and Environment Study).
“Overall, men with prostate cancer were twice as likely as others to have a relative with cancer. However, evidence suggests that the number of sexual partners affects the development of the cancer,” researchers said.
When a man has slept with more than 20 women during his lifetime, there is a 28 percent reduction in the risk of having prostate cancer (all types) and a 19 percent reduction for aggressive types of cancer.
The data also indicated that having only one male partner does not affect the risk of prostate cancer compared to those who have never had sexual intercourse with a man.
“On the other hand, those who have slept with more than 20 men are twice as likely to be diagnosed with prostate cancer of all types compared to those who have never slept with a man,” researchers said.
Does this mean public health authorities will soon be recommending men to sleep with many women in their lives?