Men who have many women partners less likely to develop prostate cancer, researchers say: a scene from the film The Lovers. <cite>Photo: Supplied</cite>
<cite class="author">By TOM DECENT</cite>
Men who have sex with more than 20 women during the course of their lifetimes are less likely to be diagnosed with prostate cancer, new research shows.
But for homosexuals who have had sex with at least 20 men and virgins, the risk of being diagnosed is doubled, the researchers from the University of Montreal have found.
Compared with men who have had just one sexual partner, men who have slept with 20 or more women have a 28 per cent lower risk of being diagnosed, and are 19 per cent less likely to develop the most aggressive form of prostate cancer.