How Many People Have Binge Eating Disorder?

Binge eating disorder is the most common eating disorder in the United States. An estimated 1 to 3 percent of American adults will have binge eating disorder at some point in their lives, according to prevalence data cited by the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). That works out to roughly 2 to 5 million people in the US, though the true number is likely higher because many cases go undiagnosed.

It affects more people than anorexia nervosa and bulimia nervosa combined. Unlike those conditions, it was not formally recognized as a distinct diagnosis until 2013, when it was added to the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5). Before that, it fell under a catch-all category called “eating disorder not otherwise specified.”

How Common Is Binge Eating Disorder Compared to Other Eating Disorders?

Binge eating disorder is roughly three times more common than anorexia and bulimia combined. Lifetime prevalence estimates place anorexia nervosa at around 0.6 percent and bulimia nervosa at around 0.3 percent of US adults, based on data cited by NIDDK. Binge eating disorder sits at 1 to 3 percent by the same measure.

The gap widens further when you look at who seeks treatment. Anorexia and bulimia tend to become visible — through dramatic weight loss or other physical signs — and often bring people into care. Binge eating disorder is frequently invisible. Most people with the condition are of average or above-average weight, and the behavior itself happens in private. Many never tell a doctor.

Worldwide estimates vary. The lifetime prevalence of binge eating disorder across global populations is generally estimated at around 1 to 2 percent, though studies in different countries report a range. The variation reflects differences in how studies define and measure the disorder, not necessarily true differences in how often it occurs.

Who Is Most Likely to Develop Binge Eating Disorder?

Binge eating disorder affects people across all racial and ethnic groups, but some patterns in who develops it are consistent. Women are diagnosed about twice as often as men. That said, some researchers believe the true gap is smaller, because men may be less likely to report binge eating or seek help for it.

Age of onset tends to be later than for anorexia or bulimia. Binge eating disorder often first appears in the late teens or early twenties, but it can begin in childhood or later adulthood. The median age of onset is around 21, according to data cited by NIDDK. It is one of the few eating disorders that remains common well into middle age and beyond.

Several factors are associated with higher risk:

• A family history of binge eating disorder or other eating disorders
• A history of childhood obesity or weight-related teasing
• Depression, anxiety, or other mood disorders
• Impulsivity or difficulty regulating emotions
• Exposure to weight stigma or dieting pressure

These are associations, not causes. Many people with these risk factors never develop the disorder, and many people without them do.

Why Are Diagnosis Rates So Much Lower Than Actual Prevalence?

Most people with binge eating disorder never receive a diagnosis. Several things get in the way.

The first is shame. Binge eating is often experienced as a personal failure rather than a medical condition. People may believe they simply lack willpower, so they do not mention it to a doctor. That belief is wrong — binge eating disorder is a recognized psychiatric condition with defined diagnostic criteria, not a character flaw.

The second is that clinicians often miss it. A person may come in for weight concerns, depression, or a related issue, and the binge eating never comes up. Screening for eating disorders in primary care is not routine, and many doctors receive limited training in this area.

The third is weight bias in medical settings. People in larger bodies are more likely to have their eating behavior overlooked or attributed to lifestyle choices. Research on weight stigma in healthcare suggests this can delay diagnosis and treatment.

The gap between prevalence and diagnosis matters because binge eating disorder responds to treatment. Untreated, it tends to persist. Studies following people over time suggest the disorder can be chronic, with symptoms lasting for years if not addressed.

What Are the Diagnostic Criteria for Binge Eating Disorder?

The DSM-5 defines binge eating disorder by a specific pattern of behavior. To meet the criteria, a person must have recurrent episodes of eating, in a discrete period of time, an amount of food that is clearly larger than most people would eat in similar circumstances. The episode must feel out of control.

These episodes must be accompanied by at least three of the following:

• Eating much more rapidly than normal
• Eating until feeling uncomfortably full
• Eating large amounts when not physically hungry
• Eating alone because of embarrassment about how much one is eating
• Feeling disgusted, depressed, or very guilty afterward

The binge episodes must occur at least once a week for three months, on average. And critically, the person must not regularly use compensatory behaviors — vomiting, laxatives, excessive exercise, or fasting — to offset the binge. If those behaviors are present, the diagnosis is more likely bulimia nervosa.

One point that often gets lost: an episode does not have to involve a huge quantity of food to count. The defining feature is loss of control, not the number of calories. Someone can eat what looks like a normal amount and still experience it as a binge if they feel unable to stop.

What Health Conditions Are Linked to Binge Eating Disorder?

Binge eating disorder is associated with a range of physical and mental health conditions. The relationship runs in both directions — the disorder can contribute to these conditions, and they can make the disorder worse.

On the physical side, the most common associations are:

• Obesity, though not everyone with binge eating disorder has it
• Type 2 diabetes
• High blood pressure and high cholesterol
• Metabolic syndrome
• Sleep apnea and other sleep problems
• Chronic pain conditions

The link with obesity is real but not universal. Some people with binge eating disorder are at a healthy weight. Others gain weight over time as a result of repeated episodes. The presence of the disorder does not determine body size.

On the mental health side, the most common co-occurring conditions are depression, anxiety disorders, and substance use disorders. Research consistently shows that people with binge eating disorder have higher rates of these conditions than the general population. Whether one causes the other is not fully understood — the evidence points to a shared underlying vulnerability rather than a simple cause-and-effect relationship.

How Is Binge Eating Disorder Treated?

Binge eating disorder is treatable. Several approaches have evidence behind them, and the choice depends on the person’s symptoms, health status, and preferences.

Cognitive behavioral therapy (CBT) is the most studied psychological treatment for binge eating disorder. It focuses on identifying and changing the thoughts and behaviors that drive binge episodes. Research shows it reduces binge frequency in many people, though not everyone responds fully.

Interpersonal psychotherapy (IPT) is another option. It addresses relationship and social factors that may contribute to the disorder. Some studies find it works about as well as CBT, though the evidence base is smaller.

Medication is also used. Lisdexamfetamine is approved by the FDA for moderate to severe binge eating disorder in adults. Some antidepressants, particularly SSRIs, are prescribed as well, though the evidence for their effectiveness specifically in binge eating disorder is more limited than for depression. Stimulant medications carry risks, including potential for misuse, and are not appropriate for everyone.

What does not work is dieting. Restriction tends to trigger more binge episodes, not fewer. Treatment approaches that focus on weight loss alone often miss the underlying disorder and can make it worse.

How Many People Recover From Binge Eating Disorder?

Recovery is possible, but the numbers are hard to pin down. Studies following people with binge eating disorder over time suggest that a significant portion improve with treatment, and some recover fully. Others continue to have symptoms or relapse.

The variation in outcomes reflects differences in how studies define recovery, how long they follow people, and what treatments they receive. There is no single recovery rate that applies to everyone.

What is clear is that treatment helps. People who receive evidence-based care are more likely to reduce binge frequency and improve related mental health symptoms than those who do not. The earlier someone gets help, the better the outlook tends to be — though improvement is possible at any stage.