Outcome of eating disorders

Area of Science:

• Psychiatry
• Clinical Psychology
• Medical Research

Background:

• Anorexia Nervosa (AN) and Bulimia Nervosa (BN) are severe eating disorders with significant long-term consequences.
• AN is associated with a high mortality rate, including suicide, and chronic illness in a substantial portion of cases.
• BN's long-term prognosis is only marginally better than AN, though with lower mortality.

Purpose of the Study:

• To review the serious course and outcome of Anorexia Nervosa and Bulimia Nervosa.
• To identify prognostic factors influencing the long-term trajectory of these eating disorders.
• To understand the prevalence of comorbid psychiatric conditions and diagnostic crossovers.

Main Methods:

• Literature review of studies on the prognosis of Anorexia Nervosa and Bulimia Nervosa.
• Analysis of mortality rates, chronicity, and comorbid psychiatric disorders.
• Examination of factors associated with better or worse outcomes.

Main Results:

• Anorexia Nervosa presents with an 18-fold increase in mortality, high suicide rates, and chronicity in ~20% of cases.
• Comorbid psychiatric disorders are common in AN patients (>50%).
• Factors like adolescent onset and longer follow-up mitigate AN outcomes, while vomiting, chronicity, and obsessive-compulsive traits are unfavorable.

Conclusions:

• The long-term outcome for Bulimia Nervosa is only slightly better than Anorexia Nervosa, with low mortality but a high rate of chronic partial eating disorders.
• Diagnostic crossover from BN to other eating disorders is rare.
• While social adjustment often normalizes in BN, definitive conclusions on prognostic factors remain elusive.