Did you actually read the article? If this was just due to increased diagnosis, one would expect rates of self-harm and suicide to stay the same or fall as kids

Did you actually read the article? If this was just due to increased diagnosis, one would expect rates of self-harm and suicide to stay the same or fall as kids are able to get better treatment for mental health issues. Instead, we see the opposite happening, self-harm is going up in lockstep with diagnosis, which suggests that the increase in diagnosis corresponds to a real increase in mental health problems among teens.