What is circumcision?

Circumcision is a surgery to remove the foreskin, a fold of skin that covers and protects the rounded tip of the penis. The foreskin provides sensation and lubrication for the penis. After the foreskin is removed, it can't be put back on again.

If circumcision is done, it's usually done soon after birth. It's sometimes done in older children and adults to treat problems with the foreskin of the penis (such as phimosis or paraphimosis) or inflammation of the tip of the penis (balanitis).

Circumcision may reduce the risk of certain infections. Those who have a circumcised penis may be less likely to get:

Urinary tract infections (UTIs).

In the first year of life, UTIs happen less often in babies who are circumcised. But UTIs aren't common.

Sexually transmitted infections (STIs).

Some studies done in men have shown that those who are circumcised are a little less likely than those who are uncircumcised to get or spread an STI, including HIV.