anorexia nervosa
anorexia ner·vo·sa
noun \-(ˌ)nər-ˈvō-sə, -zə\Definition of ANOREXIA NERVOSA
: a serious eating disorder primarily of young women in their teens and early twenties that is characterized especially by a pathological fear of weight gain leading to faulty eating patterns, malnutrition, and usually excessive weight loss
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