In other words, you know more than the doctors and scientists that have spent years studying the topic.  Nice to know - but can you tell us where you obtained your multiple PhD's in subjects like genetics, childhood pediatrics, endocrinology, psychology, and the like?  After all, in order to be able to disregard masses of research on the subject you must have a massive set of qualifications.

BTW - the simple fact that you used "so I've heard" in reference to DSM-5 makes it clear that you really know nothing about the subject.