Roux-en-Y gastric bypass produced significantly greater GLP-1 and PYY increases than gastric banding, explaining bypass's superior weight loss through better hormonal appetite suppression — the surgery's secret is hormones, not just restriction.
Key findingRYGB produced significantly greater postprandial GLP-1 and PYY3-36 increases and greater ghrelin suppression than gastric banding, with hormonal chang
What the researchers found
RYGB produced significantly greater postprandial GLP-1 and PYY3-36 increases and greater ghrelin suppression than gastric banding, with hormonal changes correlating with superior weight loss — gut hormone modification, not restriction alone, explains bypass superiority.
Why it matters
Relevant for glp-1, weight-loss.
How the study worked
cross-sectional study on glp-1, weight-loss.
What this study cannot tell us
See abstract.
How to read the evidence
moderate evidence.
When this study was published
Published in 2006.
The bigger picture
Advances peptide research.
Questions still open
- Further research needed.
- Clinical translation to evaluate.
Common questions
What was studied?
What was found?
Read the original research
Differential effects of gastric bypass and banding on circulating gut hormone and leptin levels.
Obesity (Silver Spring, Md.), 14(9), 1553-61
Citation
Korner, Judith; Inabnet, William; Conwell, Irene M; Taveras, Carmen; Daud, Amna; Olivero-Rivera, Lorraine; Restuccia, Nancy L; Bessler, Marc. (2006). Differential effects of gastric bypass and banding on circulating gut hormone and leptin levels.. Obesity (Silver Spring, Md.), 14(9), 1553-61.