Change in Emotional Eating After Bariatric Surgery: Systematic Review and Meta-Analysis
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BACKGROUND: The effect of bariatric surgery on 'emotional eating' (EE) in people with obesity is unclear. This systematic review and meta-analysis aimed to examine changes in self-reported emotional eating behaviour after bariatric surgery. METHODS: Fifteen electronic databases were searched from inception to August 2019. Included studies encompassed patients undergoing primary bariatric surgery, quantitatively assessed EE, and reported EE scores before and after surgery in the same participants. Studies were excluded if they were not in English or available in full text. The systematic review and meta-analysis were conducted according to the PRISMA guidelines. Random-effects models were used for quantitative analysis. Study quality was assessed using the National Heart, Lung, and Blood Institute quality assessment tool for before-after (pre-post) studies with no control group. RESULTS: Some 23 studies containing 6749 participants were included in the qualitative synthesis, with follow-up of from 2 weeks to 48 months. EE scores decreased to 12 months after surgery. Results were mixed beyond 12 months. Quantitative synthesis of 17 studies (2811 participants) found that EE scores decreased by a standardized mean difference of 1·09 (95 per cent c.i. 0·76 to 1·42) 4-18 months after surgery, indicating a large effect size. CONCLUSION: Bariatric surgery may mitigate the tendency to eat in response to emotions in the short to medium term.
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Beyond 18 months after bariatric surgery, results on emotion-based eating are mixed, with some studies suggesting attenuation through 36 months and others finding reoccurrence between 12 and 36 months.
“Results beyond the 18-month timeframe are mixed, with some studies suggesting attenuation of emotion-based eating through 36 months after having bariatric surgery and other studies finding reoccurrence between 12 and 36 months after having bariatric surgery (33–39).”
From Behavioral Interventions to Attenuate Driven Overeating and Weight Regain After Bariatric Surgery (2022) · cites this paper as [34]
For bariatric surgery patients, emotion-based eating appears to reliably decrease in the first 18 months postoperatively.
“For bariatric surgery patients specifically, emotion-based eating appears to reliably decrease in the first 18 months postoperatively (33, 34).”
From Behavioral Interventions to Attenuate Driven Overeating and Weight Regain After Bariatric Surgery (2022) · cites this paper as [34]
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Vanderziel, A. M., Killian, S. J., Haley, E. N., Braciszewski, J. M., Teotia, A., Brescacin, C., Carlin, A. M., Varban, O. A., & Miller-Matero, L. R. (2026) · Surgery for Obesity and Related Diseases · doi:10.1016/j.soard.2025.11.027
Rancourt, D., & Ahlich, E. M. (2026) · Surgery for Obesity and Related Diseases · doi:10.1016/j.soard.2026.01.010
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Mindfulness-Based Training Program in Bariatric Surgery Patients: An Action Research Study Protocol
BAYRAKTAR, D. D., Çatal, E., & Çiyiltepe, H. (2026) · Hemşirelikte araştırma geliştirme dergisi. · doi:10.69487/hemarge.1779207
Eating behaviors following metabolic bariatric surgery in lower, medium, and higher responders
Vuorela, L., Tuure, S., Meriläinen, S., Koivukangas, V., Karppinen, J. E., Muniandy, M., Per‐Henrik, G., Juuti, A., Pietiläinen, K. H., Berntzen, B. J., et al. (2026) · Eating Behaviors · doi:10.1016/j.eatbeh.2026.102090
Patterns of Emotional Eating Changes After Sleeve Gastrectomy
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Abreu, A. C. P., do Carmo, S. G., Cavalcanti, M. D. S. D. M., Maia, R. P., Botelho, P. B., & de Carvalho, K. M. B. (2026) · Nutrition · doi:10.1016/j.nut.2026.113432
- Authors
- Wong, L. Y., Zafari, N., Churilov, L., Stammers, L., Price, S., Ekinci, E. I., & Sumithran, P.
- Affiliations
- The University of Melbourne (AU)
- Corresponding author
- Sumithran, P
- Venue
- BJS Open
- Publisher
- Oxford University Press (OUP)
- Published
- 2020-07-16
- Volume
- 4
- Issue
- 6
- Pages
- 995-1014
- ISSN
- 2474-9842 (ISSN-L)
- PMC
- PMC7709382
- OpenAlex
- W3043062061
- Cited by
- 29
- References
- 70
- Citations by year
- 2026: 7 · 2025: 8 · 2024: 4 · 2023: 4 · 2022: 5 · 2021: 1
- FWCI
- 0.57
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- BJS Open (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- Minerva Access (University of Melbourne) (submittedVersion, cc-by-nc)
- Funders
- University of Melbourne
- Medical Research Council
- National Health and Medical Research Council
- Topics
- Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
- Social Sciences › Psychology › Clinical Psychology › Eating Disorders and Behaviors
- Health Sciences › Nursing › Nutrition and Dietetics › Nutrition, Health and Food Behavior
- Keywords
- bariatric surgery, emotional eating, obesity, eating behaviour, weight loss, postoperative outcomes
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