What Are Eating Disorders?

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Eating disorders and obesity have traditionally developed as separate clinical and research fields.

Similar mechanisms, risks, and clinical presentations often affect the same person.

Better assessment should integrate eating behaviour, psychopathology, and physical and metabolic health.

Collaboration can improve care while preserving the expertise of each field.

For decades, eating disorders and obesity have been studied and treated as separate issues. Eating disorder specialists have predominantly focused on psychopathology, body image, dietary restriction, binge eating, and extreme weight-control behaviors. Conversely, obesity specialists have concentrated on metabolic health, energy balance, medical complications, nutrition, physical activity, and weight management. This separation has produced important advances, but it may now also be creating limitations.

In contemporary clinical practice, it is increasingly evident that patients do not fit neatly into a single category. Binge-eating disorder is frequently observed among individuals seeking treatment for obesity. Some people with obesity develop restrictive eating disorders, and eating issues may arise subsequent to bariatric surgery. Moreover, individuals with eating disorders may also experience significant obesity-related medical complications. The boundaries between the two fields are therefore less clear than they once appeared.

Shared mechanisms, different perspectives

Obesity and eating disorders remain distinct conditions, and it would be a mistake to treat them as if they were the same. However, they share several potentially important mechanisms.

Body dissatisfaction can lead to attempts to change one’s weight and shape. Rigid dietary restraint may contribute to episodes of overeating or binge........

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