Eating disorders, psychiatric comorbidities, and suicide

Area of Science:

• Psychiatry
• Public Health
• Epidemiology

Background:

• Strong association exists between eating disorders and suicidality.
• The independent risk of suicide conferred by eating disorders remains unclear.

Purpose of the Study:

• To investigate whether eating disorders independently increase suicide risk.
• To identify specific eating disorders associated with elevated suicide risk.

Main Methods:

• A cohort study using Taiwan's National Health Insurance Research Database (2003-2017).
• 18,284 patients with eating disorders (cases) were matched with 73,136 controls.
• Suicide rates were estimated using the Database of All-Cause Mortality.

Main Results:

• Eating disorders significantly increased suicide risk (HR: 2.51), particularly bulimia nervosa (HR: 2.59) and other eating disorders (HR: 2.31).
• Anorexia nervosa's association with suicide became nonsignificant after adjusting for comorbidities.
• Psychiatric comorbidities, especially depressive disorder (HR: 15.89), further elevated suicide risk.

Conclusions:

• Eating disorders, particularly bulimia nervosa and other eating disorders, are independent risk factors for suicide.
• Suicide prevention strategies should specifically target individuals with eating disorders.
• Clinical attention to comorbidities like depression is crucial for suicide risk assessment in eating disorder patients.