Overvaluation of Weight or Shape and Loss-of-Control Eating Following Bariatric Surgery.

Abstract

Little is known regarding overvaluation of weight or shape, a key cognitive feature of eating disorders, among individuals with disordered eating following bariatric surgery. This study examined the significance of overvaluation of weight or shape among post-bariatric surgery patients with loss-of-control (LOC) eating. Participants were 145 individuals who had undergone sleeve gastrectomy within the previous 6 months and reported regular LOC eating. Overvaluation of weight or shape, LOC eating, and eating disorder psychopathology were assessed using the Eating Disorder Examination (EDE)-Bariatric Surgery Version interview; depressive symptoms and disability were assessed by the Beck Depression Inventory (BDI-II) and the Sheehan Disability Scale (SDS), respectively. Overvaluation of weight or shape, examined continuously, was correlated significantly with higher levels of eating disorder psychopathology (EDE), depression (BDI-II), and disability (SDS). Categorically, using established clinical cut points, relative to the subclinical overvaluation group (n = 70 [48.3%]), the clinical overvaluation group (n = 75 [51.7%]) reported significantly greater frequency of LOC eating episodes and higher EDE, BDI-II, and SDS scores. The two groups did not differ significantly in current BMI or percent weight loss following surgery. These findings, which highlight the clinical significance of overvaluation of weight or shape among patients with LOC eating following bariatric surgery, are similar to those previously reported for binge-eating disorder. Postoperatively, overvaluation of weight or shape was associated with greater eating disorder psychopathology, depression, and disability.