How common is binge eating disorder and who is at risk?

Although it has only recently been recognized as a distinct condition, binge eating disorder is probably the most common eating disorder. Most people with binge eating disorder are obese (more than 20 percent above a healthy body weight), but normal-weight people also can be affected. Binge eating disorder probably affects 2 percent of all adults, or about 1 million to 2 million Americans. Among mildly obese people in self-help or commercial weight loss programs, 10 to 15 percent have binge eating disorder. The disorder is even more common in those with severe obesity.

Binge eating disorder is slightly more common in women, with three women affected for every two men. The disorder affects blacks as often as whites; its frequency in other ethnic groups is not yet known. Obese people with binge eating disorder often became overweight at a younger age than those without the disorder. They also may have more frequent episodes of losing and regaining weight (yo-yo dieting).