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Over eating more common than under eating

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Binge eating common in U.S.
More prevalent disorder than anorexia and bulimia, Harvard survey finds
The Associated Press
Updated: 12:21 p.m. ET Feb 1, 2007

BOSTON - Frequent binge eating is the country’s most common eating disorder, far outpacing the better-known diet problems of anorexia and bulimia, according to a national survey.

Psychiatric researchers at Harvard University Medical School and its affiliate, McLean Psychiatric Hospital, have billed the study as the first national census of eating disorders. The results were published Thursday in the medical journal Biological Psychiatry.

The survey found that 3.5 percent of women and 2 percent of men suffer from binge eating, defined as bouts of uncontrolled eating, well past the point of being full, that occur at least twice a week.

The doctors diagnosed fewer than 1 percent of women and 0.3 percent of men with anorexia, a disorder where an exaggerated fear of weight gain causes undereating and malnourishment. The study determined that 1.5 percent of women and 0.5 percent of men had bulimia, characterized by the “binge-purge” syndrome of overeating followed by vomiting.

McLean Hospital’s Dr. Harrison Pope, an author of the study, said binge eaters face severe risk of obesity and related diseases like diabetes, heart disease, stroke and certain cancers.

A binge eater, for instance, might eat a full dinner, then a quart of ice cream for dessert, followed by a bag of chips, without being able to stop, Pope said.

“It’s a little bit analogous to something you hear from an alcoholic, when they might say, ‘Well, I wanted to have one drink,’ and they’ve had 12 drinks and they’re passed out on the floor,” he said in a conference call with reporters. “Even though they feel full, even though they feel disgusting and guilty, they can’t stop.”

Dr. James I. Hudson, the study’s lead author and a Harvard Medical School psychiatry professor, said binge eating deserves more recognition from health professionals.

“These results argue that binge eating is common. It’s more common than both the other eating disorders combined and it’s strongly associated with obesity,” he said. “Taken together, these findings suggest that this is an eating disorder and should be treated as such.”

'Cause or symptom?'
Funding for the study came from several sources, including the National Institutes of Health, Eli Lilly & Co. and the Robert Wood Johnson Foundation. Hudson said the research team interviewed more than 9,000 people nationwide from 2001 to 2003 about their eating habits and psychological backgrounds. The study probably underestimates the actual number of those with eating disorders, he said, because people are often ashamed to acknowledge their abnormal eating habits.

The survey also found that people struggle longer with binge eating — symptoms persist for an average of about eight years compared to less than two years for anorexic patients, who are often young and may recover as they mature. Bulimics suffer without cure for an average of roughly eight years, according to the study.

Men and women between the ages of 18 and 29 were most likely to be diagnosed with an eating disorder, while people older than 60 had the lowest rates of eating problems. The doctors said all three illnesses usually coincided with mood disorders like depression and anxiety.

A combination of the “cultural barrage” of images of rail-thin movie stars, ubiquitous fast-food advertising and genetic predisposition is usually the root of eating disorders, the study said.

Dr. B. Timothy Walsh, director of the eating disorders research unit at the New York State Psychiatric Hospital at Columbia University Medical Center, said the study confirms a widespread belief that the population of binge eaters is growing. He said if binge eating is a cause of obesity, psychiatrists could give more effective treatment to many overweight people.

“Everyone has a sense, whether from a casual inspection of people on Broadway or an empirical study, that there are a lot of problems with binge eating and overeating,” he said. “The question is, is it a cause or a symptom?”

© 2007 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

© 2007

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