"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," said lead researcher Dr Marie-Elise Parent.
But when asked whether public health authorities should recommend men to sleep with many women in their lives Dr Parent added: "We're not there yet." [lol]
http://www.telegraph.co.uk/science/s...mics-find.html