What is anorectic person like? I mean are they happy with their looks?

Thin vs mentally ill. Not all skinny people are anorexic. Anorexia nervosa is a mental illness in which a person starves themself because no matter how much weight they lose, they still believe they are fat and think they will only feel better about themself if they lose more weight. Anorexia should be diagnosed by a physician and treated by a team of doctors, therapists and nutritionists at a specialized center.