It is also a sign that the Jewish people will be perpetuated through the circumcised man. The health benefits of this practice are merely incidental. It is worth noting, however, that circumcised males have a lower risk of certain cancers, and the sexual partners of circumcised males also have a lower risk of certain cancers. The commandment is binding upon both the father of the child and the child himself. If a father does not have his son circumcised, the son is obligated to have himself circumcised as soon as he becomes an adult.
Circumcision is performed on the eighth day of the child's life, during the day.
The day the child is born counts as the first day, thus if the child is born on a Wednesday, he is circumcised on the following Wednesday. Keep in mind that Jewish days begin at sunset, so if the child is born on a Wednesday evening, he is circumcised the following Thursday. Circumcisions are performed on Shabbat , even though they involve the drawing of blood which is ordinarily forbidden on the sabbath. As with almost any commandment, circumcision can be postponed for health reasons. Jewish law provides that where the child's health is at issue, circumcision must wait until seven days after a doctor declares the child healthy enough to undergo the procedure.