Study published in Annals of Family Medicine, 8:64-72 (2010). doi: 10.1370/afm.1073. A meta analysis of the literature from 1997 through 2008 regarding male circumcision. The study found, "There is little evidence showing clinical benefit from nontherapeutic male circumcision." The implications were stated: "Patients who request circumcision for clinical reasons should be informed of the lack of consensus surrounding the procedure, the lack of strong evidence regarding its benefits, and the potential medical and psychosocial harms of the procedure."
The study concluded:
The role of adult nontherapeutic male circumcision in preventing sexually transmitted infections, urinary tract infections, and penile cancer remains unclear. Current evidence fails to recommend widespread neonatal circumcision for these purposes.