Reversal of Roux-en-Y Gastric Bypass: A Swedish National Cohort Study

Introduction

Roux-en-Y gastric bypass (RYGB) remains a cornerstone surgical treatment for severe obesity, proven to induce substantial weight loss and improve obesity-related comorbidities. However, emerging evidence indicates that a small subset of patients may develop severe long-term complications refractory to conservative management. This Swedish nationwide cohort study comprehensively examines the incidence, indications, and outcomes following RYGB reversal – a complex procedure that restores original gastrointestinal anatomy. Understanding the risks and benefits of reversal is crucial as bariatric surgery volumes continue to rise globally.

Study Design and Methodology