Ego functioning predicts first-year status in adults with anorexia nervosa and bulimia nervosa.

Severe personality disturbance is a feature that possibly explains chronicity in eating disorders, a largely inexplicable development in terms of previously investigated factors. We tested this hypothesis in a group of 41 anorectics and bulimics with ratings of 13 ego functions and of status at 1-year follow-up. Patients who still were preoccupied with weight or shape and had a DSM-III-R eating disorder at follow-up had more severe ego disturbance at initial presentation than those who were free from symptoms. The relevance of demographics, syndromal diagnosis and clinical factors other than ego functioning was limited. The importance of ego functioning for prognosis in eating disorders thus appears to overshadow that of several factors that have been extensively cited in the literature.