Self-Reported Eating Disorder Symptoms Before and After Gastric Bypass and Duodenal Switch for Super Obesity—a 5-Year Follow-Up Study
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This study assessed eating disorder pathology in persons with obesity before and after Roux-en-Y gastric bypass (RYGB) and biliopancreatic diversion with duodenal switch (DS), in a 5-year follow-up study.
Sixty participants with BMI 50–60 kg/m2 were randomly assigned to RYGB (n = 31) or DS (n = 29). The participants completed the Eating Disorder Examination-Questionnaire (EDE-Q) before and 6 months, 1 year, 2 years, and 5 years after surgery.
Before surgery, the prevalence of objective bulimic episodes was 29 % in the RYGB group and 32 % in the DS group. The prevalence improved during the first 12 months after surgery in both groups. After 5 years, the prevalence of objective bulimic episodes was 22 % in the RYGB group and 7 % in the DS group. The difference between groups throughout follow-up was non-significant (logistic regression model). A linear mixed model showed that global EDE-Q score was not a significant predictor for weight loss after surgery, but participants reporting objective bulimic episodes before surgery had significantly lower BMI than those with no episodes after 2 years (p = 0.042) and 5 years (p = 0.013). Global EDE-Q score was significantly lower in the DS group after 5 years (p = 0.009) (linear mixed model).
Objective bulimic episodes but not global EDE-Q score before surgery predicted greater weight loss after RYGB and DS. The DS group had a significantly lower global EDE-Q score than the RYGB group 5 years after surgery.
KeywordsEDE-Q Global EDE-Q score Gastric bypass Duodenal switch Bulimic episodes BMI
Conflict of Interest
Authors Hanvold and Mala report grants from the South-Eastern Norway Regional Health Authority. Authors Morseth, Hanvold, Rø, Risstad, Šaltytė Benth, Engström, Olbers, and Henjum declare that they have no conflict of interest.
Informed consent was obtained from all individual participants included in the study.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
The South-Eastern Norway Regional Health Authority, Oslo University Hospital, and Sahlgrenska University Hospital supported the trial financially. The funding source had no role in the design of the study; collection, analysis, and interpretation of the data; or drafting of the manuscript.
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