What are some disorders/diseases that are common for teens?

It has been a result that nearly two thirds of boys and nearly three quarters of girls have at least have one psychiatric disorder. 2o percent of teens have a major depressive disorders. Most teens have an anxiety disorder caused by school, moving or a loss of a parent. Bipolar is another disorder a teen could possibly get. Eating disorders are common between teenage females because someone told them they're fat or they want to be like everyone else. I said just be yourself, I honestly don't care what everyone thinks of me, but sometime i do have my moments and worry about things like that but thats natural to worry sometimes.