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Binge eating in obesity: a longitudinal study following biliopancreatic diversion.

OBJECTIVE
Evaluating the influence of dieting and of being overweight on binge-eating episodes and on psychological traits in severely obese patients.


METHODS
Clinical interviews and self-report questionnaires prior to and 2 years following biliopancreatic diversion (BPD) when subjects adopt a completely free eating style and achieve in maintaining a normal or nearly normal body weight.


RESULTS
At two years following the operation, the prevalence of binge-eating episodes sharply fell and the subjects' overall psychological conditions improved; only a few patients started binging.


DISCUSSION
These results point out the importance of dieting and of overweight itself in determining eating behavior disturbances or psychopathology. The fact that only a very small number of patients continue or start binging following BDP suggests that a minority of obese bingers should be considered as true eating-disordered patients.