"Maybe medical school, and a full understanding of the human body would be in order"
Medical school didn't do doctors any good. In fact, it did great harm in indoctrinating dangerous ideals & protocols (kinda like organized religion).
As far as a full understanding of the human body, no one knows more about your body than you do. No one knows more about Jon's body than he does. No one knows more about my body than I do. It would be ignorant to think that textbook diagnosis and treatments apply to everyone since no 2 people are alike, not even twins.