Nutritional Independence After Bariatric Surgery: Recovery, Reintervention, and Long-Term Survival
In brief
Nearly 9 in 10 patients regained nutritional independence after bariatric surgery
In this single-center study of 168 patients, 88% regained nutritional independence after a median 12.1 months. Of those, 85% needed endoscopic or surgical intervention, often to address problems at the stomach-intestine connection. Patients still dependent at 12 months had numerically higher mortality, but the difference was not statistically significant; about 80% of them later recovered independence.
- Journal
- Journal of the American College of Surgeons (Q1)
- Published
- 13 October 2026
- Study design
- Retrospective cohort
- Evidence level
- Level 3, Low (CEBM 3b)
- Authors
- Mélissa V Wills, Pattharasai Kachornvitaya, Xinlei Zhu, Andrew T Strong, Matthew D Kroh, Valentin Mocanu, et al.
- PMID
- 42868068
- DOI
- 10.1097/XCS.0000000000002253
Why clinicians should know about it
- Picked for Bariatric and Metabolic Surgery (paper of the day, 14 October 2026): Long‑term nutritional independence and survival after bariatric surgery
Abstract
BACKGROUND: Nutritional failure requiring enteral or parenteral support is a serious complication of bariatric surgery, but its long-term course, likelihood of recovery, and relationship with survival are poorly characterized. STUDY DESIGN: We conducted a single-center retrospective cohort study of adults requiring enteral or parenteral nutrition after bariatric surgery from 2004-2023. Nutritional independence was defined as discontinuation of all supplemental nutrition for ≥3 months. Kaplan-Meier and Cox proportional hazards analyses evaluated survival; a 12-month landmark analysis addressed immortal time bias. RESULTS: Among 168 patients (85.1% female; median age 41.2 years; median BMI 47.3 kg/m²), 148 (88.1%) achieved nutritional independence during a median 11.6-year follow-up. Of these, 126 (85.1%) required endoscopic or surgical intervention, most commonly addressing gastrojejunal complications. Median time from nutritional support initiation to independence was 12.1 months. Among 165 patients alive and in follow-up at 12 months, mortality was 20.4% in 93 patients not yet independent versus 6.9% in 72 independent patients (HR 2.56, 95% CI 0.95 to 6.90, p=0.064). Of those not independent at 12 months, 74/93 (79.6%) subsequently achieved independence. CONCLUSIONS: Nutritional dependence after bariatric surgery was usually reversible, predominantly through endoscopic or surgical correction rather than nutritional support alone. Delayed nutritional independence was associated with numerically higher mortality, although this did not reach statistical significance. Timely, anatomy-specific intervention should therefore be prioritized to restore nutritional autonomy.
Abstract as published, via PubMed.
For healthcare professionals. The summary is generated by AI from the published abstract, and the evidence level is assigned automatically from the study design on the Oxford CEBM hierarchy. Neither is medical advice. Read the full paper before changing practice.