Transgender and nonbinary teens and young adults — who experience anxiety and depression at higher rates than others — often feel less mental distress after surgery to remove their breasts, according to a study out of Northwestern Medicine published Monday. It’s a finding that comes as a number of states are attempting to ban gender-confirming surgery for people younger than 18, and as hospitals, including in Chicago, have been criticized, and sometimes threatened, for the care they provide to transgender, nonbinary and gender-nonconforming children. “Our findings are that top surgery (to remo…