I was never anorexic but I hated having breakfast soon after getting up in the morning when I was a kid because my stomach wasn't awake yet and I just wasn't hungry.
Yet my mam always put a plate of breakfast in front of me and bullied me into eating it, she said "Eat it all up, you need it inside you before you go to school".
So i had to eat it but it made me feel a bit sick.
In the end i refused to eat breakfast and my mam gave in, and made me some sandwiches to take to school instead so i could eat them in the morning break. That was fine because my stomach had woken up by then, and i was hungry..
So perhaps some people become anorexic when they get older because they hate food because their parents forced them to eat it when they were young?