Anorexia nervosa is an eating disorder characterized by voluntary starvation and exercise stress.
See also:
Anorexia nervosa is a complex disease, involving psychological, sociological and physiological components.
A person who is suffering from anorexia is referred to as 'anorexic' or (less commonly) 'anorectic'.
"Anorectic" is the noun form, where "anorexic" is the adjectival form..
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