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Julia Stadelmaier

University Medical Center Freiburg

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AUG 18, 2026 · JOURNAL ARTICLE

Metabolic and bariatric surgery in adults with obesity and diabetes mellitus: a network meta-analysis

Cochrane Database of Systematic Reviews

A rigorous network meta-analysis of 18 studies (13 RCTs, 5 cohort studies) with 15,282 participants using GRADE certainty assessment, showing consistent but imprecise evidence that RYGB, OAGB, and SG improve weight loss, waist circumference, and glycaemic control versus lifestyle/medical treatment in adults with obesity and type 2 diabetes.

Strong EvidenceLea Gorenflo Lukas Schwingshackl Guido Schwarzer

Reported

Sample size15282

RCTs included13

Cohort studies included5

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