Research
Energy balance
On average, most patients lose 60% of excess weight after gastric bypass and 40% after vertical banded gastroplasty.
Practitioners can expect significant weight loss outcomes from these bariatric procedures.
StrongSupportsmedium confidence
On average, most patients lose 60% of excess weight after gastric bypass and 40% after vertical banded gastroplasty.
Why this rating
Based on a literature review which aggregates data from multiple studies.
Source
Nonsurgical Factors That Influence the Outcome of Bariatric Surgery
L. K. George Hsu et al. · Psychosomatic Medicine · 1998
DOI 10.1097/00006842-199805000-00021
reviewCited 439×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
Related findings · Energy balance
- Achieving a total body weight loss of 10-15% (or >10-15 kg) through Total Diet Replacement (TDR) induces remission of Type 2 Diabetes in individuals with short-duration disease.Strong
- Bariatric surgery is superior to medical management alone for inducing significant long-term weight loss, remission of type 2 diabetes, and reduction in mortality for patients with BMI ≥ 40 or ≥ 35 with comorbidities.Strong
- Achieving type 2 diabetes remission requires significant weight loss (≥15 kg) via major caloric restriction, independent of macronutrient composition.Strong
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →