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Meta-Analysis
. 2024 Jun;25(6):e13729.
doi: 10.1111/obr.13729. Epub 2024 Mar 7.

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

Anne Jacobs  1   2 , Valerie M Monpellier  1 , Bart Torensma  3 , Evangelia E Antoniou  4 , Ignace M C Janssen  1 , Rob A E M Tollenaar  2 , Anita T M Jansen  5
Affiliations
Meta-Analysis

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

Anne Jacobs et al. Obes Rev. 2024 Jun.

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.

Keywords: bariatric surgery; behavioral factors; mental factors; psychological factors; weight loss.

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References

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