Birth control is a way for men and women to prevent pregnancy. There are many different methods of birth control, including hormonal contraception such as "the pill."
Women take the pill by mouth to prevent pregnancy, and, when taken correctly, it is up to 99.9% effective. However, the pill does not protect against sexually transmitted diseases, including HIV (the virus that causes AIDS). The latex male condom provides the best protection from most STDs. Other types of combined estrogen and progestin hormonal contraception include the patch and the vaginal ring.