medved said...
This seems to confirm that frequent ejaculation is associated with a reduced risk of developing prostate cancer. Now if you will excuse me, I am going to go reduce my risk....
http://dx.doi.org/10.1016/j.juro.2015.02.802
Sounds more like an assumption that men ejaculate less as they age and then linking that to the fact that PC will occur at sometime in your later years.