Why do people turn anorexic?

Its because of either the physical or mental abuse they had gone through. I'm an anorexic binge purge sub type. I have both the illness of a bulimic and an anorexic. I am this because relatively, bulimics are not underweight. That's where anorexia comes in. But because of the self loathe and public loathe that the only way to feel accepted is to do whatever it takes to be the skinniest person there. It's not really ALL choice. It does take over your body and recovery will be harder. Fix it the sooner the better