Article Sections

Introduction

Bulimia nervosa is an eating disorder characterized by recurrent episodes of binge eating, compensatory behaviors to prevent weight gain (eg, self-induced vomiting, misuse of laxatives or diuretics, fasting, excessive exercise), and self-worth that is negatively influenced by body shape/size.  Body weight is typically normal or overweight (BMI ≥18.5 kg/m2 and <30 kg/m2).  Many patients experience significant shame related to their symptoms and try to conceal binge-eating episodes and purging behaviors.

Epidemiology and risk factors

The estimated lifetime prevalence of bulimia nervosa in middle- to high-income countries is 1%.  It is more common in female patients than in male patients (10:1 ratio), and onset is typically during adolescence and young adulthood (age 12-25).

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