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 ...

While you may hope you never need it, it’s important to know about backup birth control — what your choices are, which type works best, and when to use it. These are some of the reasons you might want ...