How does circumcision prevent developing penile cancer?

Lower HPV rates: Human papilloma virus (hpv) increases the risk of penile cancer, just like it increases the risk of cervical cancer in women. The presence of a foreskin increases the risk for hpv infection. This is one reason circumcised men have a lower rate of penile cancer. However, penile cancer is extremely rare, so decisions about circumcision should not be based on fear of penile cancer.

Adherence: Apparently foreskin tissue provides a better site for the cancer cells to develop whether from virus or other unknown causes.

Saves washing: Penile cancer almost only develops in uncircumcised men, however scandinavians who almost all remain uncirc'd are almost free of pc. Answer is good hygiene. Highest incidence of PC is in tropics in men who do not or cannot retract their foreskins and wash underneath. Partners of unhygienic uncirc'd males have higher incidence of c of cervix. Human papilloma virus, loves foreskins and ? Causative.