Anorexia Nervosa

Definition

Severe eating disorder characterized by restrictive food intake leading to significantly low body weight, intense fear of weight gain, and distorted body image.

How it works

Anorexia nervosa involves complex psychological and biological factors including perfectionism, need for control, body dysmorphia, and neurobiological vulnerabilities affecting reward processing and satiety signaling. Severe caloric restriction causes progressive malnutrition, metabolic adaptation, hormonal dysregulation, and multiple medical complications. Physiological consequences include amenorrhea, electrolyte imbalances, cardiac arrhythmias, bone loss, and multiorgan dysfunction. The condition has highest mortality rate among psychiatric disorders. Successful treatment requires multidisciplinary approach combining psychotherapy, nutritional rehabilitation, and medical monitoring. Nutritional rehabilitation must be carefully managed to prevent refeeding syndrome while restoring adequate nutrition.

Role

Represents severe psychological and metabolic dysfunction requiring specialized interdisciplinary intervention to restore nutrition and psychological health.

Examples

• Obsessive food restriction and excessive exercise
• Social withdrawal and isolation
• Perfectionist personality traits
• History of trauma or abuse

Recommendations

Seek specialized eating disorder treatment from multidisciplinary team including psychiatrist, therapist, and registered dietitian with eating disorder expertise. Nutritional rehabilitation must be gradual and monitored for refeeding syndrome. Medical monitoring of cardiac function and electrolytes is essential throughout recovery.

Key takeaway

Anorexia nervosa requires urgent specialized multidisciplinary treatment combining psychotherapy and carefully monitored nutritional rehabilitation to prevent severe medical complications.

Related terms