Anorexia nervosa has the highest mortality rate among mental illnesses.

• A. True
• B. False
• C. Not enough data
• D. It depends on age

Answer: (A)

Mortality risk in anorexia nervosa is driven by the severe medical complications that can accompany extreme weight loss, along with a substantial risk of suicide. Prolonged malnutrition affects every organ system, with the heart being particularly vulnerable. People can develop bradycardia, low blood pressure, electrolyte disturbances (like imbalances in potassium and other ions), and potentially dangerous arrhythmias or heart failure. These medical dangers, combined with a high rate of suicide in people with eating disorders, lead to a mortality burden that is higher than that of most other mental illnesses. Because of this combination of medical and psychiatric risk, anorexia nervosa is widely cited as having the highest mortality rate among mental health conditions. While exact numbers vary by study, the consensus is clear: the mortality risk is greater than that of other psychiatric disorders, and it remains a critical reason for urgent medical and psychiatric collaboration in treatment. Early, integrated treatment focusing on medical stabilization, nutrition, and psychotherapy can help reduce this risk.