Preoperative Variables Linked to Weight Reduction and Subsequent Weight Regain Following Bariatric Surgery

Overview

This study examines the relationship between preoperative variables and weight loss outcomes following bariatric surgery over a 10-year period.

Background

Bariatric surgery is a critical intervention for severe obesity, yet outcomes can vary significantly among patients. This study addresses a gap in the literature regarding preoperative predictors of weight regain in a UK public health context.

Data Highlights

The study analyzed data from a cohort of patients who underwent bariatric surgery, focusing on various preoperative factors such as age, sex, preoperative weight, ethnicity, socioeconomic status, diabetes, and smoking history. The follow-up period extended to 120 months post-surgery, allowing for a comprehensive assessment of weight loss and regain patterns.

Key Findings

• Age, sex, preoperative weight, ethnicity, socioeconomic status, diabetes, and smoking history may influence weight-loss outcomes.

• One-anastomosis gastric bypass (OAGB) has comparable weight-loss outcomes to Roux-en-Y gastric bypass (RYGB).

• Recurrent weight gain is a significant concern following bariatric surgery.

• Preoperative factors associated with weight regain have been under-researched, particularly in the UK healthcare setting.

• The study utilized a retrospective cohort design with a follow-up period extending to 120 months post-surgery.

Clinical Implications

Healthcare professionals should consider a range of preoperative factors when evaluating patients for bariatric surgery to better predict weight loss outcomes. Enhanced understanding of these variables may inform preoperative assessments and postoperative management strategies.

Conclusion

The findings underscore the importance of preoperative evaluations in predicting long-term weight loss and the risk of weight regain following bariatric surgery. Further research is needed to refine predictive models and improve patient outcomes.

Related Resources & Content

1. Obesity Surgery, 2023 -- Influence of Preoperative Mental Health Assessment on Long-term Weight Loss Outcomes Following Bariatric Surgery

2. Obesity Surgery, 2017 -- Self-Reported Pleasure-Seeking Behavior as a Predictor of Weight Loss Outcomes One Year Post-Roux-en-Y Gastric Bypass

3. Obesity Surgery, 2022 -- Initial Weight Reduction Following Surgery as a Predictor of Long-Term Weight Outcomes After Roux-En-Y Gastric Bypass, Banded Roux-En-Y Gastric Bypass, and Sleeve Gastrectomy

4. Obesity Surgery, 2022 -- Insights into Patient Experiences with Weight Regain Following Bariatric Surgery

5. Overweight and obesity management - NCBI Bookshelf, 2025 -- National Institute for Health and Care Excellence Guidelines

6. Scientific evidence for the updated guidelines on indications for metabolic and bariatric surgery (IFSO/ASMBS), 2024

7. Efficacy and safety of one anastomosis gastric bypass versus Roux-en-Y gastric bypass at 5 years (YOMEGA), 2024

8. National Institute for Health and Care Excellence Guidelines

9. American Society for Metabolic and Bariatric Surgery position statement on one-anastomosis gastric bypass

10. Scientific evidence for the updated guidelines on indications for metabolic and bariatric surgery (IFSO/ASMBS)

11. Efficacy and safety of one anastomosis gastric bypass versus Roux-en-Y gastric bypass at 5 years (YOMEGA): a prospective, open-label, non-inferiority, randomised extension study - PubMed

12. Efficacy of One-Anastomosis Gastric Bypass Versus Roux-en-Y Gastric Bypass for Gastroesophageal Reflux Disease: A Systematic Review and Meta-analysis of Randomized Controlled Trials - PubMed

13. National introduction of one-anastomosis gastric bypass in the UK National Bariatric Surgery Registry: a cohort study - PMC

14. IBC Oxford Poster Abstract 13 - Definition and predictors of weight regain after metabolic bariatric surgery: a systematic review and meta-analysis | BJS | Oxford Academic

15. Development and validation of an interpretable machine learning-based calculator for predicting 5-year weight trajectories after bariatric surgery: a multinational retrospective cohort SOPHIA study.

16. Preoperative Comorbidities Associated With Weight Loss Following Metabolic and Bariatric Surgery: A Rapid Review.