This document provides an overview of anorexia nervosa and bulimia nervosa (AN and BN). It defines the disorders, lists risk factors and causes, describes symptoms and signs, and outlines diagnosis and treatment approaches. AN involves severe undereating and fear of weight gain, while BN involves binge eating and compensatory behaviors like purging. Causes include genetic, biological, psychological, and sociocultural factors. Treatment is multidisciplinary and aims to address physical, nutritional, and mental health aspects of the disorders.