Kelly M. Vitousek

Significant progress has been achieved in the development and evaluation of evidence-based psychological treatments for eating disorders over the past 25 years. Cognitive behavioral therapy is currently the treatment of choice for bulimia nervosa and binge-eating disorder, and existing evidence supports the use of a specific form of family therapy for adolescents with anorexia nervosa. Important challenges remain. Even the most effective interventions for bulimia nervosa and binge-eating disorder fail to help a substantial number of patients. A priority must be the extension and adaptation of these treatments to a broader range of eating disorders (eating disorder not otherwise specified), to adolescents, who have been largely overlooked in clinical research, and to chronic, treatment-resistant cases of anorexia nervosa. The article highlights current conceptual and clinical innovations designed to improve on existing therapeutic efficacy. The problems of increasing the dissemination of evidence-based treatments that are unavailable in most clinical service settings are discussed.

All dominant models of the eating disorders implicate personality variables in the emergence of weight concerns and the development of specific symptoms such as bingeing and purging. Standardized measures of personality traits and disorders generally confirm clinical descriptions of restricting anorexics as constricted, conforming, and obsessional individuals. A less consistent picture suggesting affective instability and impulsivity has emerged from the assessment of subjects with bulimia nervosa. Considerable heterogeneity exists within eating disorder subtypes, however, and a number of special problems complicate the interpretation of personality data in this population. These include young age at onset, the influence of state variables such as depression and starvation sequelae, denial and distortion in self-report, the instability of subtype diagnoses, and the persistence of residual problems following symptom control.

OBJECTIVE: This study provides what the authors believe is the first empirical evaluation of cognitive behavior therapy as a posthospitalization treatment for anorexia nervosa in adults. METHOD: After hospitalization, 33 patients with DSM-IV anorexia nervosa were randomly assigned to 1 year of outpatient cognitive behavior therapy or nutritional counseling. RESULTS: The group receiving nutritional counseling relapsed significantly earlier and at a higher rate than the group receiving cognitive behavior therapy (53% versus 22%). The overall treatment failure rate (relapse and dropping out combined) was significantly lower for cognitive behavior therapy (22%) than for nutritional counseling (73%). The criteria for "good outcome" were met by significantly more of the patients receiving cognitive behavior therapy (44%) than nutritional counseling (7%). CONCLUSIONS: Cognitive behavior therapy was significantly more effective than nutritional counseling in improving outcome and preventing relapse. To the authors' knowledge, these data provide the first empirical documentation of the efficacy of any psychotherapy, and cognitive behavior therapy in particular, in posthospitalization care and relapse prevention of adult anorexia nervosa.

A stepped care approach would link different patient needs to therapeutic modalities that range from simple advice to intensive inpatient care. Brief methods, including self-help and psychoeducation, may be effective for a subset of patients with bulimia nervosa and binge eating disorder. Identifying this subset remains a challenge. It is unclear how patients who fail to respond to evidence-based, first-line treatments should be treated. Given the absence of data on effective treatment of anorexia nervosa (AN), discussion of a stepped care approach is speculative. Because AN typically demands expert and sustained treatment, the lower levels of stepped care models are inapplicable for these patients. A stepped care approach poses methodological challenges for clinical research and raises important clinical issues, such as when to switch from 1 level of treatment to another.