An eating disorder is a compulsion in which the main problem is a person eats in a way which disturbs their physical health.

The eating may be too excessive (compulsive over-eating), too limited (restricting), may include normal eating punctuated with episodes of purging, may include cycles of binging and purging, or may encompass the ingesting of non-foods.

The best-known eating disorders are Anorexia nervosa, Bulimia nervosa, and Pica..

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