About 10% of the world currently suffers from a "mental health disorder," according to the psychiatrists. 1 out of 3 experiences a mental health disorder in their life ... again, according to psychiatrists.
Mental disorder - Wikipedia, the free encyclopedia
Recognized mental health disorders have proliferated from about 50, in the middle of the last century, to over 300 nowadays, and growing. In short, the main issue is a massive proliferation of psychiatric diagnosis, with so many disorders and such ridiculously vague symptoms that it's almost impossible for people not to fall under them.