Eating Behaviour Predicts Weight Loss Six Months After Bariatric Surgery: A Longitudinal Study
Open accessAbstract
Bariatric surgery is currently the most durable weight loss solution for patients with morbid obesity. The extent of weight loss achieved, however, is subject to variation due to various factors, including patients’ behaviour. In this study, we aimed to identify pre- and post-surgical predictors of weight loss following bariatric surgery. This prospective study included 57 participants who went through bariatric surgery (laparoscopic Roux-en-Y gastric bypass: n = 30; laparoscopic sleeve gastrectomy: n = 23; one anastomosis gastric bypass-mini gastric bypass: n = 4) in two tertiary referral hospitals. Consenting participants were assessed prior to surgery (T0), and three months (T1) and six months (T2) after surgery. The assessment included interview and anthropometric measurements. The interview was done with the aid of instruments, including the Hospital Anxiety and Depression Scale (HADS) for anxiety and depression screening and the Dutch Eating Behaviour Questionnaire (DEBQ) for eating behaviour assessment. Baseline comorbidity status was obtained from medical records. A Generalised Estimating Equation (GEE) was developed to determine predictors of weight loss. Participants in the study were mostly women (n = 37, 65%) with a mean age of 39.4 (SD = 10.01) years. The mean excess BMI loss (EBMIL) and total weight loss (TWL) at the sixth month was 63.31% and 23.83%, respectively. Anxiety, depression, and external eating scores reduced over time. Advancing age, high BMI, and higher scores for emotional and external eating emerged as significant negative predictors for TWL%. It can be concluded that the patients experienced substantial weight loss after surgery. Continuous monitoring of psychological well-being and eating behaviour are essential for optimal weight loss.
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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 [39]
The Methods and Results describe assessments only through six months after surgery. The Discussion mentions a separate two-year finding about emotional eating and weight loss, but does not report mixed findings, attenuation through 36 months, or recurrence between 12 and 36 months. Searches for those longer-term patterns found no supporting passage in our copy. (LLM, conf=0.77)
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- Authors
- Subramaniam, K., Low, W.-Y., Lau, P.-C., Chin, K.-F., Chinna, K., Kosai, N. R., Taher, M. M., & Rajan, R.
- Affiliations
- University of Malaya (MY)
- University Kebangsaan Malaysia Medical Centre (MY)
- Corresponding author
- Low, Wah-Yun
- Venue
- Nutrients
- Publisher
- MDPI AG
- Published
- 2018-11-02
- Volume
- 10
- Issue
- 11
- Pages
- 1616
- ISSN
- 2072-6643 (ISSN-L)
- PMC
- PMC6266615
- OpenAlex
- W2899228565
- Cited by
- 36
- References
- 44
- Citations by year
- 2026: 4 · 2025: 4 · 2024: 2 · 2023: 4 · 2022: 4 · 2021: 6 · 2020: 7 · 2019: 5
- FWCI
- 4.68
- Type
- journal article
- Language
- en
- Open access
- gold
- dx.doi.org
- Licence
- Locations
- Nutrients (publishedVersion, cc-by)
- Europe PMC (PubMed Central) (publishedVersion, other-oa)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- The University of Malaya Research Repository (University of Malaya) (submittedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Funders
- Universiti Malaya (PV122/2012A)
- Topics
- Health Sciences › Medicine › Surgery › Bariatric Surgery and Outcomes
- Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Obesity, Physical Activity, Diet
- Social Sciences › Psychology › Clinical Psychology › Eating Disorders and Behaviors
- Keywords
- bariatric surgery, eating behaviour, weight loss, morbid obesity, Roux-en-Y gastric bypass, sleeve gastrectomy, emotional eating, external eating, anxiety, depression, predictors of weight loss, excess BMI loss
- MeSH terms
- Adult, Feeding Behavior, Female, Humans, Male, Middle Aged, Obesity, Gastric Bypass, Weight Loss, Treatment Outcome
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