包皮环切预防HIV吗？

Circumcised men are less likely than uncircumcised men to get HIV from HIV-positive female partners, but circumcision doesn’t decrease their risk as much as other prevention options. There is no evidence that male circumcision decreases a woman’s risk of getting HIV, and the evidence about the benefits of circumcision among gay and bisexual men is inconclusive.

Circumcised men should take other actions, like using condoms the right way every time they have sex or taking medicine to prevent or treat HIV, to further reduce their risk of getting HIV or to protect their partners.