Male circumcision reduces the risk of heterosexually acquired HIV infection by approximately 60%, according to multiple randomized controlled trials conducted in Kenya, Uganda, and South Africa. This protective effect has been consistently observed in high-prevalence regions of sub-Saharan Africa and led the World Health Organization (WHO) and UNAIDS to recommend voluntary medical male circumcision (VMMC) as a key component of comprehensive HIV prevention strategies in 2007.
Evidence Base: Three "gold standard" efficacy trials showed a 50–60% reduction in HIV incidence among circumcised men compared to uncircumcised men.
Mechanism: The foreskin contains immune cells and a moist environment that may facilitate HIV transmission. Removing it reduces susceptibility by decreasing the surface area vulnerable to infection and disrupting potential viral reservoirs.
This is a good reason why a lot of girls are refusing to meet uncircumcised men
but according to
@Julia Sky the foreskin has nothing to do with STI/HIV and i'm spreading misinformation