Today, though, the future of medical transition for minors is up for debate. On February 3, the American Society of Plastic Surgeons recommended that “surgeons delay gender-related breast/chest, genital, and facial surgery until a patient is at least 19 years old.” The next day, the American Medical Association, the country’s largest organization representing doctors, endorsed that view: “In the absence of clear evidence, the A.M.A. agrees with A.S.P.S. that surgical interventions in minors should be generally deferred to adulthood.” These statements echo what skeptics of American youth gender medicine have been saying for years: The evidence of the benefits and risks of mastectomies and other surgeries is insufficient to justify their use as treatments for gender dysphoria, and follow-up data on those who have undergone the procedures are scant.