Historically, the oldest evidence for circumcision comes from Egypt. This technique was also widely practiced by Semitic peoples, Greeks and Romans, although it was not considered mandatory and certain people rejected it. Judaism and Islam are the leading religions that see circumcision as mandatory practice for their members today, although Judaism is attaching a greater importance to this act. Jewish male children are circumcised eight days after their birth, unless health reasons force a delay. Islam clerics are less formal about the exact time of circumcision, although some communities still observe the eighth day practice of Judaism. One difference between the two religions is that Jewish male children are circumcised by a religious figure called “mohel”, while some Muslim communities, especially in Iran, take their children to hospital for circumcision. The Roman Catholic Church rejected this practice at the Council of Florence in 1442.

Circumcision is also common in a number of African and Australian religious traditions, where it is used as a passage rite for young males. The United States, the Philippines and South Korea are the only countries that still practice circumcision routinely on a majority of males for non-religious reasons. Routine circumcision practices in South Korea are largely the result of American cultural and military influence following the Korean War.