A study found a slight decrease in prostate cancer risk among men who'd been circumcised either as an infant or at least before their first sexual encounter. The study was done by the University of Washington, and involved 34-hundred men. Half had prostate cancer and half did not. Those who'd been circumcised had a 15% lower risk of prostate cancer. The researchers theorized that circumcision makes a man less vulnerable to sexually transmitted disease, which are linked to prostate cancer risk. Experts, however, stopped short of recommending circumcision as a way to lower one's risk of prostate cancer.
Read more: http://healthland.time.com/2012/03/12/circumcision-the-surgery-that-can-lower-prostate-cancer-risk/#ixzz1p2IVtO1w