Patients with prior metabolic surgery were nearly 7 times less likely to achieve successful weight loss with liraglutide compared to those without surgical history.
6.78xHigher odds of poor response to liraglutide in patients with prior metabolic surgery
What the researchers found
Prior metabolic surgery was associated with a 6.78x higher odds of poor response to liraglutide for weight loss.
Why it matters
As more patients have histories of both bariatric surgery and GLP-1 medication use, understanding interactions between these approaches is critical for treatment planning.
The numbers in context
- 64 adults, BMI 28-32.5, 12-week liraglutide treatment
- Responders: 37 (57.8%); non-responders: 27 (42.2%)
- Responder weight loss: 11.0% (9.04 kg) vs non-responder: 4.2% (3.55 kg)
- Prior metabolic surgery: OR 6.78 for non-response (95% CI 1.95-23.61, p<0.01)
- BMI 30.5+: OR 4.79 for non-response (95% CI 1.46-15.71, p<0.01)
How the study worked
Retrospective analysis of 64 adults with mild obesity on a 12-week liraglutide intervention.
Who was studied
N=64 adults with mild obesity (BMI 28-32.5), about 76% female, treated with liraglutide for 12 weeks.
What this study cannot tell us
Small sample size (64 patients). Retrospective design. Short 12-week duration. No details on type of prior metabolic surgery.
How to read the evidence
Small retrospective study. Low evidence quality but important clinical signal warranting further investigation.
When this study was published
Published in 2025.
The bigger picture
With the growing overlap between surgical and pharmacological obesity treatments, clinicians need to understand which patients are most likely to benefit from each approach.
Questions still open
- What mechanisms explain reduced liraglutide efficacy after bariatric surgery?
- Would tirzepatide or semaglutide show similar reduced efficacy in this population?
Common questions
Does prior bariatric surgery affect GLP-1 medication effectiveness?
Should post-surgical patients still try GLP-1 drugs?
Read the original research
Prior metabolic surgery attenuates the weight-loss efficacy of liraglutide in patients with mild obesity.
Frontiers in endocrinology, 16, 1580159
Citation
Ouyang, Yuqin; Xiang, Xinyue; Hu, Xinyun; Chu, Xuehui; Tang, Wenjuan; Feng, Wenhuan. (2025). Prior metabolic surgery attenuates the weight-loss efficacy of liraglutide in patients with mild obesity.. Frontiers in endocrinology, 16, 1580159. https://doi.org/10.3389/fendo.2025.1580159