Birth control refers to methods or techniques used to prevent pregnancy. This can include various forms of contraception, such as condoms, birth control pills, intrauterine devices (IUDs), and sterilization procedures for men and women. The goal of these methods is to prevent the sperm from reaching an egg, or to prevent fertilized eggs from implanting in the uterus. Birth control can help individuals plan their families and can also reduce the number of unintended pregnancies and abortions.