Research
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The amount of excess weight reduction after bariatric surgery varies by procedure, with laparoscopic adjustable gastric banding reducing excess weight by 49% and Roux-en-Y gastric bypass by 76%.
Practitioners should inform patients about expected weight loss outcomes based on the type of surgery.
StrongSupportsmedium confidence
Among the 3 most commonly performed surgeries, the amount of excess weight reduction ranges from 49% for laparoscopic adjustable gastric banding to 76% for Roux-en-Y gastric bypass.
Why this rating
Based on comparative data from surgical outcomes.
Source
Should This Patient Have Weight Loss Surgery?
Gerald W. Smetana et al. · Annals of Internal Medicine · 2017
DOI 10.7326/m17-0698
otherCited 4×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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