For people who want to prevent pregnancy, birth-control drugs come with an obvious reward. They also come with some small risks—including, for some forms, a slightly increased risk of breast cancer.

Certain types of birth control methods have been associated with reduced bone mineral density. The risk may be greater in people who start taking them during adolescence. Birth control medications ...

If you want to avoid pregnancy, you may choose an intrauterine device (IUD) or birth control pills from the many options available. You’ll want to think about your lifestyle before you choose which ...