The effect of cognitive symptoms in binge eating disorder on depression and self-esteem: a cross-sectional study

Purpose To compare individuals with class II and III obesity with and without binge eating disorder (BED) in terms of sociodemographic characteristics, depressive symptoms, self-esteem, eating behaviors, and cognitive variables thought to be involved in the pathophysiology of the disease. Methods The participants were selected from volunteer patients with body mass index >= 35 applying to the Ondokuz Mayis University Medical Faculty, Turkey, for bariatric surgery between 01.07.2016 and 31.05.2019. The Beck Depression Inventory (BDI), Rosenberg Self-Esteem Scale (RSES), and Eating Disorder Examination Questionnaire (EDE-Q) were administered to all participants. Results Binge eating disorder (BED) was determined in 95 (34%) of the 278 individuals applying for bariatric surgery. The frequency of previous psychiatric diseases was higher in the BED group than in the non-BED group. BDI, RSES, total EDE-Q, weight concern, shape concern, and eating concern EDE-Q subscale scores were also higher in the BED group. Correlation analysis revealed positive low correlation between depression scores and total EDE-Q scores and all subscales scores, with the exception of restraint. Positive low correlation was determined between decreased self-esteem and body weight and shape concern. At multivariate regression analysis, cognitive variables explained 28.6% of variance in depressive symptoms in the BED group, and 21.5% of variance in self-esteem. Conclusion The study results showed elevation in cognitive factors in patients with BED compared to the controls. Among these variables, eating and weight concern were shown to be associated with depressive symptoms, while eating concern was linked to self-esteem.