This resource is part of our Treatment Navigator, a comprehensive guide to common behavioral/mental health diagnoses and the evidence based practices (EBPs) that help these conditions.

Overview

Bulimia Nervosa (BN) is an eating disorder characterized by recurrent episodes of binge eating followed by compensatory behaviors—such as self-induced vomiting, fasting, excessive exercise, or misuse of laxatives or diuretics—to prevent weight gain. These behaviors typically occur at least once a week for three months and are accompanied by an intense preoccupation with body shape and weight. Unlike anorexia nervosa, individuals with bulimia usually maintain a body weight within or above the normal range, which can make the disorder less visible but equally dangerous. Treatment emphasizes interrupting the binge–purge cycle, normalizing eating patterns, addressing cognitive distortions about weight and control, and improving emotion regulation and self-worth.

Indicated Evidence-Based Practices (EBPs)

• Enhanced Cognitive Behavioral Therapy (CBT-E) – gold-standard treatment targeting the overvaluation of shape and weight, perfectionism, and unhelpful dietary restraint patterns
• Dialectical Behavior Therapy (DBT) for Eating Disorders – addresses emotional dysregulation, impulsivity, and shame that often maintain binge–purge behaviors
• Interpersonal Psychotherapy (IPT) – focuses on resolving interpersonal stressors and role transitions linked to binge eating and purging cycles
• Family-Based Treatment for Bulimia Nervosa (FBT-BN) – supports family involvement in reducing binge–purge behaviors and restoring healthy eating routines, especially for adolescents
• Acceptance and Commitment Therapy (ACT) – helps clients tolerate distress and commit to values-based behavior instead of avoidance or control-based eating
• Pharmacotherapy (SSRIs, particularly fluoxetine) – adjunctive option shown to reduce binge–purge frequency and comorbid depression/anxiety when combined with psychotherapy

When to Choose What

CBT-E is the first-line treatment for most individuals with bulimia and has the strongest evidence base.

DBT may be preferable for clients with significant emotional instability or self-harm tendencies.

IPT is effective for those whose disordered eating is closely tied to interpersonal conflict, grief, or social isolation.

FBT-BN is indicated for adolescents living with engaged family support.

ACT can be integrated for clients struggling with perfectionism, shame, or rigid self-judgment.

Pharmacotherapy should be considered as a supportive measure rather than a standalone treatment.

Core Components of Treatment

• Psychoeducation about the binge–purge cycle and its physical and psychological risks
• Establishment of regular, structured eating (three meals and two snacks daily) to prevent physiological deprivation
• Identification of triggers for bingeing and purging, including emotional and interpersonal antecedents
• Cognitive restructuring to challenge overvaluation of weight and shape, perfectionistic standards, and all-or-nothing thinking
• Emotion regulation and distress tolerance training (e.g., DBT skills)
• Exposure to avoided foods and body image situations to reduce fear and avoidance
• Relapse prevention planning emphasizing balanced coping and self-compassion
• Coordination with medical providers to monitor electrolytes, cardiac health, and other medical complications

Measures and Monitoring

Screening and diagnostic tools

• Eating Disorder Examination (EDE) / EDE-Questionnaire (EDE-Q): assesses frequency and intensity of eating disorder symptoms
• Eating Disorder Inventory-3 (EDI-3): measures psychological factors such as perfectionism, body dissatisfaction, and impulse regulation
• Binge Eating Scale (BES): evaluates severity of binge behaviors
• SCOFF Questionnaire: quick screening tool for disordered eating
• Beck Depression Inventory-II (BDI-II) and GAD-7: assess comorbid mood and anxiety symptoms
• Medical evaluation: includes electrolyte levels, ECG, and dental health assessments

Monitoring and outcome tools

• EDE-Q or EDI-3 administered every 4–6 sessions to track symptom change
• Self-monitoring records of binge and purge behaviors for awareness and accountability
• WHO-5 Well-Being Index for overall functioning and life satisfaction
• Session Rating Scale (SRS) to monitor alliance and engagement
• Weight and vital signs monitored by medical providers, not as treatment goals but for safety

Adaptations and Special Considerations

Medical monitoring: Address potential complications including hypokalemia, cardiac arrhythmias, and esophageal damage. Collaboration with primary care or nutrition specialists is essential.

Therapeutic stance: Maintain a compassionate, nonjudgmental tone; avoid colluding with body dissatisfaction or using weight as a marker of success.

Comorbidity: Depression, anxiety, substance use, and borderline personality features are common—treatment plans should integrate interventions accordingly.

Trauma-informed care: Explore trauma history carefully and ensure emotional regulation skills are in place before intensive trauma processing.

Family involvement: In adolescent or young adult cases, involve family members in supporting structure and accountability.

Telehealth: Effective for CBT-E and DBT-based interventions with structured self-monitoring and regular contact.

Relapse prevention: Emphasize balance, flexibility, and the development of non–weight-based sources of identity and control.

References

American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev.).

Fairburn, C. G. (2008). Cognitive Behavior Therapy and Eating Disorders. Guilford Press.

Fairburn, C. G., Cooper, Z., Doll, H. A., et al. (2009). Transdiagnostic cognitive-behavioral therapy for patients with eating disorders: A two-site trial with 60-week follow-up. American Journal of Psychiatry, 166(3), 311–319.

Wilson, G. T., Fairburn, C. G., Agras, W. S., Walsh, B. T., & Kraemer, H. (2002). Cognitive-behavioral therapy for bulimia nervosa: Time course and mechanisms of change. Journal of Consulting and Clinical Psychology, 70(2), 267–274.

Agras, W. S., Walsh, B. T., Fairburn, C. G., Wilson, G. T., & Kraemer, H. C. (2000). A multicenter comparison of cognitive-behavioral therapy and interpersonal psychotherapy for bulimia nervosa. Archives of General Psychiatry, 57(5), 459–466.

Safer, D. L., Telch, C. F., & Chen, E. Y. (2009). Dialectical Behavior Therapy for Binge Eating and Bulimia. Guilford Press.

Le Grange, D., Lock, J., & Loeb, K. (2010). Family-based treatment for adolescent bulimia nervosa: A randomized controlled trial. Journal of the American Academy of Child & Adolescent Psychiatry, 49(5), 503–511.