I would consult a doctor, dietician, or nutritionist. I would think if you've had a problem that has made it hard for you to eat for awhile then when you start eating again you'd have to take it carefully, couldn't just start eating whatever you wanted/"thought" would be good. I think anorexia though is also a mental thing with eating; if you want to eat but can't for physical reasons, that's different. I don't think they can turn into each other.