Some nonbinary people want or prefer to have a flat, masculine chest. For transgender children and teens, going on a prescription medicine called puberty blockers can postpone or pause puberty, which prevents or reduces the amount of breast growth they would have. The effects of puberty blockers are temporary, so breast growth will resume whenever the person stops taking that medicine. For people who have already had breast growth, going on masculinizing hormone therapy such as testosterone may reduce breast size just a little bit, if at all, but it does not get rid of breasts. There are also nonbinary people who go on feminizing hormone therapy in order to get other body changes that they want, but who do not want breasts. Wearing a well-fitted sports bra or binder can reduce how large the breasts look, and temporarily make a flat, masculine chest shape. The only way to permanently get rid of breasts is through surgery. Surgery to take away the entire breast is called mastectomy. For transgender men and transmasculine people, mastectomy is also called masculine chest reconstruction, to emphasize that they don't see it as a loss, but as fixing a problem.