"There is compelling evidence that male circumcision reduces the risk of heterosexually acquired HIV infection in men by approximately 60%. Three randomized controlled trials have shown that male circumcision provided by well trained health professionals in properly equipped settings is safe. WHO/UNAIDS recommendations emphasize that male circumcision should be considered an efficacious intervention for HIV prevention in countries and regions with heterosexual epidemics, high HIV and low male circumcision prevalence.
Male circumcision provides only partial protection, and therefore should be only one element of a comprehensive HIV prevention package which includes: the provision of HIV testing and counseling services; treatment for sexually transmitted infections; the promotion of safer sex practices; the provision of male and female condoms and promotion of their correct and consistent use."
http://www.who.int/hiv/topics/malecircumcision/en/
- Easier hygiene. Circumcision makes it simpler to wash the penis. Washing beneath the foreskin of an uncircumcised penis is generally easy, however.
- Decreased risk of urinary tract infections.The overall risk of urinary tract infections in males is low, but these infections are more common in uncircumcised males. Severe infections early in life can lead to kidney problems later on.
- Decreased risk of sexually transmitted infections. Circumcised men might have a lower risk of certain sexually transmitted infections, including HIV. Still, safe sexual practices remain essential.
- Prevention of penile problems.Occasionally, the foreskin on an uncircumcised penis can be difficult or impossible to retract (phimosis). This can lead to inflammation of the foreskin or head of the penis.
- Decreased risk of penile cancer. Although cancer of the penis is rare, it's less common in circumcised men. In addition, cervical cancer is less common in the female sexual partners of circumcised men.
http://www.mayoclinic.org/tests-procedures/circumcision/basics/why-its-done/prc-20013585
"Since the last policy was published, scientific research shows clearer health benefits to the procedure than had previously been demonstrated. According to a systematic and critical review of the scientific literature, the health benefits of circumcision include lower risks of acquiring HIV, genital herpes, human papilloma virus and syphilis. Circumcision also lowers the risk of penile cancer over a lifetime; reduces the risk of cervical cancer in sexual partners, and lowers the risk of urinary tract infections in the first year of life.
The AAP believes the health benefits are great enough that infant male circumcision should be covered by insurance, which would increase access to the procedure for families who choose it."
https://www.aap.org/en-us/about-the...inal-Say-is-Still-Up-to-parents-Says-AAP.aspx