There have been concerns that vasectomy is linked with a heightened risk of developing prostate cancer since the 1993 Harvard Health Professionals Follow-up Study suggested an association. The findings of the study were then challenged, and subsequent research failed to back up the findings. Most recently, researchers examined the association between vasectomy and prostate cancer incidence among 66,542 men, who participated in the Cancer Prevention Study II. The study found no link between vasectomy and either prostate cancer incidence or related deaths during a follow-up period lasting between 20 and 30 years. This study should go a long way toward allaying the fears of men who may be worried that vasectomy is linked with serious ill effects.
P.S. Vasectomy is the most effective method of male contraception.