Binge eating disorder
Binge Eating Disorder (BED) is a DSM-5-TR eating disorder characterized by recurrent episodes of eating large quantities of food with a sense of loss of control, marked distress, but without regular compensatory behaviors. It is the most common eating disorder in North America.
Overview
Binge Eating Disorder (BED; DSM-5-TR 307.51) is a feeding and eating disorder characterized by recurrent episodes of binge eating in the absence of regular compensatory behaviors. A binge episode involves consuming an amount of food that is definitely larger than what most people would eat in a similar period under similar circumstances, accompanied by a sense of lack of control over eating during the episode. To meet diagnostic criteria, binges must occur at least once a week for three months, be associated with marked distress, and include at least three of five characteristic features (eating rapidly, eating until uncomfortably full, eating large amounts when not physically hungry, eating alone due to embarrassment, feeling disgusted/depressed/guilty afterward).
BED is the most common eating disorder in North America, with lifetime prevalence of approximately 2-3.5% in U.S. and Canadian adult samples — substantially higher than anorexia nervosa or bulimia nervosa. The disorder affects women and men, with approximately 60% female and 40% male prevalence (a more balanced ratio than other eating disorders). It occurs across all racial, ethnic, and socioeconomic groups, and across the weight spectrum — many individuals with BED are at “normal” weight.
BED was added to the DSM in 2013 (DSM-5), having previously been included only as a research category. Its formalization reflected accumulated evidence that the pattern is clinically distinct from bulimia nervosa, that it produces substantial distress and impairment, and that it responds to specific evidence-based treatments.
BED is highly comorbid. Approximately 80% of individuals with BED have at least one other psychiatric diagnosis at some point, most commonly mood disorders, anxiety disorders, substance use disorders, and ADHD. The disorder is associated with elevated rates of obesity, type 2 diabetes, cardiovascular disease, and other obesity-related complications, although BED occurs across the weight spectrum and is not synonymous with obesity.
Treatment is highly effective. Specialized psychotherapies — Cognitive behavioural Therapy-Enhanced for Eating Disorders (CBT-E), Interpersonal Psychotherapy (IPT), and Dialectical behaviour Therapy adapted for BED — produce remission of binge eating in approximately 50-60% of treated individuals. Medication options including lisdexamfetamine (Vyvanse) are also approved and effective.
Signs and symptoms
- Recurrent binge episodes — Eating, in a discrete period of time (e.g., within any 2-hour period), an amount of food that is definitely larger than what most people would eat under similar circumstances.
- Loss of control during eating — Sense of lack of control over eating during the episode — feeling unable to stop or control what or how much one is eating.
- Eating much more rapidly than normal — Episodes typically characterized by accelerated, often automatic eating; less awareness of the eating process while it is occurring.
- Eating until uncomfortably full — Continuing past satiety cues; physical discomfort following the episode.
- Eating large amounts when not physically hungry — Eating disconnected from physical hunger cues; eating in response to emotional, environmental, or other non-hunger triggers.
- Eating alone due to embarrassment — Concealing the extent of eating from family, partners, or roommates; eating in private to avoid judgment.
- Disgust, depression, or guilt after episodes — Marked negative emotional response following binges, often more painful than the eating itself.
- Marked distress — Substantial distress regarding the binge eating pattern, contributing to clinical significance of the diagnosis.
- Absence of regular compensatory behaviors — Distinct from bulimia nervosa: BED does not include regular use of vomiting, laxatives, fasting, or excessive exercise to compensate for binges.
- Comorbid mood symptoms — Frequent co-occurring depression, anxiety, low self-esteem, body-image disturbance, and shame about eating patterns.
Diagnostic context
The DSM-5-TR criteria for Binge Eating Disorder (307.51) require:
A. Recurrent episodes of binge eating characterized by:
- Eating, in a discrete period of time (e.g., within any 2-hour period), an amount of food that is definitely larger than what most people would eat in a similar period under similar circumstances; AND
- A sense of lack of control over eating during the episode (a feeling that one cannot stop eating or control what or how much one is eating).
B. The binge-eating episodes are associated with three (or more) of the following: eating much more rapidly than normal; eating until feeling uncomfortably full; eating large amounts of food when not feeling physically hungry; eating alone because of feeling embarrassed by how much one is eating; feeling disgusted with oneself, depressed, or very guilty afterward.
C. Marked distress regarding binge eating is present.
D. The binge eating occurs, on average, at least once a week for 3 months.
E. The binge eating is not associated with the recurrent use of inappropriate compensatory behaviour as in bulimia nervosa and does not occur exclusively during the course of bulimia nervosa or anorexia nervosa.
Severity specifiers (based on number of binge-eating episodes per week): mild (1-3), moderate (4-7), severe (8-13), extreme (14 or more). Specify if in partial or full remission.
Differential diagnosis includes bulimia nervosa (compensatory behaviors present), anorexia nervosa (significantly low body weight, fear of gaining weight), other specified feeding or eating disorder, depression with overeating, and bipolar disorder. Validated assessment instruments include the Eating Disorder Examination (EDE-Q), Binge Eating Scale (BES), and Questionnaire for Eating and Weight Patterns (QEWP-5).
Causes and risk factors
BED develops through interacting biological, psychological, and environmental factors:
Genetic factors: heritability is approximately 0.40-0.50. First-degree relatives of individuals with BED have elevated rates of eating disorders, mood disorders, and substance use disorders, suggesting shared underlying vulnerability.
Neurobiological factors: alterations in dopaminergic reward processing, serotonergic regulation, and executive control are documented. Functional neuroimaging shows similarities to substance use and behavioural addiction patterns in brain reward circuitry.
Developmental and family factors: childhood adversity (particularly emotional abuse and neglect), family conflict, and disordered family eating patterns are over-represented. Body-shaming, weight-focused parenting, and dieting in childhood and adolescence elevate risk.
Psychological factors: emotion regulation difficulties (BED is often described as an “emotion-regulation” disorder), perfectionism, low self-esteem, body-image disturbance, and history of trauma are common.
Dieting and weight history: chronic dieting paradoxically elevates risk for binge eating; restrictive eating disrupts hunger and satiety cues and creates the deprivation conditions that precipitate binges.
Comorbidity: mood disorders (~50%), anxiety disorders (~50%), substance use disorders (~25%), ADHD (~30%), trauma history, and personality disorders are commonly comorbid.
Cultural factors: weight-stigmatizing cultural environments, media exposure to thin-ideal imagery, and “diet culture” all contribute to body dissatisfaction, dieting, and the conditions in which BED develops.
Typical treatments
Several evidence-based treatments produce significant improvement in BED:
Cognitive behavioural Therapy — Enhanced for Eating Disorders (CBT-E; Fairburn): the most extensively studied BED treatment. 20-session structured protocol addressing cognitive distortions about food, weight, and shape; behavioural patterns; and emotion regulation. Strong evidence base; remission rates of 50-60%.
Interpersonal Psychotherapy (IPT): focuses on interpersonal precipitants and consequences of binge eating. Comparable outcomes to CBT-E in long-term follow-up, with somewhat slower onset of improvement.
Dialectical behaviour Therapy adapted for BED: uses DBT skills (mindfulness, distress tolerance, emotion regulation, interpersonal effectiveness) to address the emotion-regulation underpinnings of binge eating. Strong evidence base.
Self-help and guided self-help: CBT-based self-help with brief clinician guidance has substantial evidence and is appropriate for milder presentations or settings with limited specialist access.
Pharmacotherapy:
- Lisdexamfetamine (Vyvanse) — first medication FDA-approved (2015) and Health Canada-approved (2018) specifically for moderate-to-severe BED. Reduces binge frequency and severity in many patients.
- SSRIs (fluoxetine, sertraline) — reduce binge frequency in some patients; first-line when comorbid depression or anxiety is present.
- Topiramate — reduces binge eating in some studies but with significant side-effect burden; not first-line.
Combined treatment (psychotherapy + pharmacotherapy) often outperforms either alone, particularly for severe presentations.
Weight management considerations: for individuals with BED and obesity, weight-loss treatment alone is generally not effective and may worsen binge patterns. Treatment of BED is typically pursued first or concurrently with weight management; weight stabilization rather than active weight loss is often the immediate goal.
Bariatric surgery considerations: BED is common in bariatric-surgery candidates and is associated with poorer post-surgical outcomes if not addressed. Many bariatric programs require BED treatment before surgical eligibility.
Group therapy and peer support: Overeaters Anonymous, eating disorder support groups, and structured therapy groups provide community-based recovery support.
When to seek help
Professional support is indicated when:
- You have recurrent episodes of eating large amounts of food with a sense of loss of control.
- You experience significant distress, shame, or guilt about your eating patterns.
- You are eating in secret or hiding the extent of your eating from others.
- Eating patterns are affecting your physical health, mood, or relationships.
- You have tried multiple times to change the pattern through dieting or willpower without success.
- You are experiencing comorbid depression, anxiety, or substance use.
- You are considering bariatric surgery or other major weight intervention.
Eating disorder–specific support and crisis resources in Canada:
- 1-866-NEDIC-20 (1-866-633-4220) — National Eating Disorder Information Centre (NEDIC). Free, confidential support and information; chat available at nedic.ca; M-Th 9 AM-9 PM, F 9 AM-5 PM ET.
- 1-888-988-3275 — National Initiative for Eating Disorders (NIED). Information and support.
- Hopewell Eating Disorder Support Centre (Ottawa): 613-241-3428.
- 1-800-668-6868 — Kids Help Phone (under 20; call or text CONNECT to 686868; 24/7).
Crisis support: if suicidal thoughts or self-harm urges are present, free 24-hour support is available at 9-8-8 (Suicide Crisis Helpline, call or text) or 1-833-456-4566 (Talk Suicide Canada).
Frequently asked questions
Is binge eating disorder the same as overeating?
Can I have BED if I am not overweight?
How is BED different from bulimia?
Will dieting help?
How long does treatment take?
Is medication necessary?
References
- American Psychiatric Association. (2022). Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev.). APA.
- Fairburn, C. G. (2008). Cognitive behaviour Therapy and Eating Disorders. Guilford Press.
- McElroy, S. L., et al. (2015). Lisdexamfetamine dimesylate for adults with moderate to severe binge eating disorder. JAMA Psychiatry, 72(3), 235–246.
- Hilbert, A., et al. (2019). Meta-analysis on the long-term effectiveness of psychological and medical treatments for binge-eating disorder. International Journal of Eating Disorders, 52(12), 1353–1376.
- National Eating Disorder Information Centre (NEDIC). (n.d.). Information and support resources.
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ShiftGrit Psychology & Counselling is professionally regulated, certified, and recognized by leading psychology and mental-health organizations across Alberta and Canada. These associations reflect our commitment to ethical practice, clinical standards, and evidence-informed therapy through Identity-Level Therapy and Reconditioning.
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