Some birth control methods provide a physical barrier to conception without altering a woman's hormones. Others rely on hormones to prevent ovulation and restrict implantation—at least in theory. Whether or not hormonal birth control can cause an abortion is the subject of much debate. read more
Examples of artificial birth control are hormonal contraceptives (the pill, injections, rings, patches and implants, emergency contraception), contraceptive barrier methods (condoms, diaphragms, spermicides, cervical caps) and other devices or methods such as interuterine devices (IUDs), vasectomy or tubal ligation. read more
An important note: the changes to the endometrium affected by hormonal birth control can still allow for implantation when a woman conceives (as many women who got pregnant while taking the Pill “religiously” can testify). read more