Slideshow: Visual Guide to Binge Eating Disorder

Binge eating disorder isn't the same as occasional overeating. Plenty of people eat too much once in a while. Who hasn’t had a stomachache after a huge Thanksgiving dinner? People with this eating disorder, though, feel compelled to do so on a regular basis -- at least once a week over a period of 3 months or longer.

People who have binge eating disorder feel they can't control how much or even what they're eating. They often eat alone, until they feel sick, or when they’re not hungry. Guilt, shame, disgust, or sadness come after the binge. People may feel so embarrassed about their behavior that they go out of their way to hide it from friends and family.

Bulimia and binge eating disorder aren't the same, although they share some symptoms. People with bulimia also regularly overeat, and they may feel the same negative emotions, such as a loss of control, shame, or guilt. The key difference is that people with bulimia "purge" afterward. They might make themselves vomit, use laxatives or diuretics, or exercise too much. Purging is not part of binge eating disorder.

Anyone can develop binge eating disorder, regardless of race, sex, age, or weight. It’s believed to be the most common eating disorder in the U.S. Although women are slightly more likely to have it, men can also get it. More than 6 million Americans -- 2% of men and 3.5% of women -- will have this condition at some point in their lives. Men are more likely to have it in middle age. Among teens, 1.6% have binge eating disorder.

Many people who develop binge eating disorder also struggle with their weight. Among people with the disorder, about two-thirds are obese, and one study found that as many as 30% of people who seek weight-loss treatment may also have it. People who are overweight or obese are also at risk for related health issues like heart disease, high blood pressure, and type 2 diabetes.

Many people with binge eating disorder also have other emotional or mental health problems, such as depression, anxiety, bipolar disorder, and substance abuse. They may also feel stressed, have trouble sleeping, and struggle with low self-esteem or body image shame.

Experts aren't sure exactly what causes eating disorders. A mix of factors, including a person's genes, psychology, and background, may be involved. Dieting can lead to binge eating disorder, but we don't know whether that alone can trigger it. Some people may be extra sensitive to food cues, such as smells or images of food. The disorder can also result from stressful or traumatic life events, such as the death of a loved one or being teased about weight.

If you think you might have binge eating disorder, know that it can be successfully treated. The first step is getting a diagnosis. To do that, a doctor or other health professional will give you a physical exam and ask questions about your eating habits, emotional health, body image, and feelings toward food.

Talking with a psychiatrist or other counselor is key in working on emotional issues. Cognitive behavioral therapy (CBT) aims to change the negative thought patterns that can spark binge eating. Interpersonal therapy (IPT) addresses relationship problems that may be involved. It also helps to work with a nutritionist to learn healthy eating habits and keep a food diary as you're recovering.

Certain medications, such as antidepressants and specific anti-seizure drugs that can help control food cravings and urges to binge, may be useful when used along with counseling. Vyvanse (lisdexamfetamine), a medication used to treat ADHD, is the first drug to be approved by the FDA to treat binge eating disorder. It is not clear how the drug works, but studies have shown that Vyvanse is able to help reduce the number of binge days per week.

Binge eating can lead to weight gain and make it tough to shed extra pounds and keep them off for good. As part of their treatment, people with binge eating disorder may need help with that. Traditional weight loss programs may help, but some people struggle with strict diets. Ask your doctor whether you could benefit from a specialized weight-loss program for people with eating disorders.

If you're at risk for binge eating disorder, you can take action to avoid getting it. Watch for feelings such as, guilt, shame, or being impulsive around food, or having low self-esteem. If you have these kinds of issues, or if eating disorders run in your family, talk to a doctor or a therapist.