Influence of mental and behavioral factors on weight loss after bariatric surgery: A systematic review and meta-analysis

Anne Jacobs*, Valerie M. Monpellier, Bart Torensma, Evangelia E. Antoniou, Ignace M. C. Janssen, Rob A. E. M. Tollenaar, Anita T. M. Jansen

*Corresponding author for this work

Research output: Contribution to journal(Systematic) Review article peer-review

Abstract

INTRODUCTION: Multiple factors are related to lower weight loss after bariatric surgery. This review and meta-analysis evaluates the influence of several mental and behavioral factors on weight loss. METHOD: Six electronic databases were searched. Percentage excess weight loss (%EWL) was calculated for all moderator and non-moderator groups of the variables: symptoms of depression, anxiety and binge eating, compliance, physical activity, quality of life, and body image. All moderators, surgery types, and follow-up moments were analyzed separately. RESULTS: In total, 75 articles were included in the review; 12 meta-analyses were conducted. Higher postoperative compliance to follow-up was associated with 6.86%-13.68% higher EWL. Preoperative binge eating was related to more weight loss at 24- and 36-month follow-up (7.97% and 11.79%EWL, respectively). Patients with postoperative binge eating symptoms had an 11.92% lower EWL. Patients with preoperative depressive symptoms lost equal weight compared to patients without symptoms. CONCLUSION: Despite the high heterogeneity between studies, a trend emerges suggesting that the presence of postoperative binge eating symptoms and lower postoperative compliance may be associated with less weight loss after bariatric-metabolic surgery. Additionally, preoperative depressive symptoms and binge eating do not seem to significantly impact weight loss.
Original languageEnglish
Article numbere13729
JournalObesity Reviews
DOIs
Publication statusE-pub ahead of print - 7 Mar 2024

Keywords

  • bariatric surgery
  • behavioral factors
  • mental factors
  • psychological factors
  • weight loss

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