This chapter helps readers to understand the main characteristics of the three major types of eating disorders: anorexia nervosa, bulimia nervosa, and binge eating. It also examines each disorder from a neurobiological perspective, including genetic factors when known, neuroimaging results, the understanding of neurotransmitter dysregulation, cognitive performance, and various types of treatment. The chapter then presents the consideration of the unique challenges associated with comorbidity, societal pressure, and medical implications. Eating disorders are increasingly common, debilitating, and potentially life-threatening disorders that are clearly linked in their neurobiological basis. Mental health professionals should be aware of the signs and symptoms of eating disorders, as individuals might not disclose their eating habits as readily as their mood, anxiety level, or other symptoms. Treatment is complex, as no medication has been shown to be consistently effective, and each eating disorder will bring with it specific goals.