According to the U.S. Census Bureau, about 2.6 million Americans identify as transgender, meaning their gender identity is different from the sex assigned to them at birth.
When transgender people seek medical therapy, they most commonly receive gender-affirming hormone therapy, which involves taking hormones to develop physical characteristics that better match their gender identity. Feminizing hormone therapy can trigger the development of breasts, help redistribute body fat to the hips and thighs, and lead to thinning of facial and body hair. Masculinizing hormone therapy can lead to a deeper voice, the redistribution of body fat away from hips and thighs, increased body and facial hair, increased muscle mass, and changes to the menstrual cycle.