Birth control (contraception) is used to prevent pregnancy. Birth control methods work by preventing the woman's ovary from releasing an egg (ovum), preventing the male's sperm from fertilizing the egg, or preventing implantation of the egg in the lining of the uterus.
Health benefits and risks, convenience, cost, religious beliefs, and a partner's preference may all affect which birth control method is chosen. One method may work better than others for an individual or for a couple. Available methods include:
WebMD Medical Reference from Healthwise