Which weight-loss surgery is kinder to your stomach? new study aims to find out.

NCT ID NCT04763993

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study compares how two weight-loss surgeries—gastric bypass and sleeve gastrectomy—affect acid reflux in 128 obese patients. Participants will be randomly assigned to one surgery, and their reflux will be measured before and after using a 24-hour pH test. The goal is to see which surgery causes less worsening of reflux, helping doctors make better treatment choices.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Roux-en-Y gastric bypass and sleeve gastrectomy (surgical procedures)
What this could lead to
If successful, this study could help doctors choose the best weight-loss surgery for patients with acid reflux, reducing long-term discomfort.
What could go wrong
This is a small, early-stage study at one hospital, so results may not apply to everyone. Surgery always carries risks like infection or complications.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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