Breath test reveals gut bacteria changes after Weight-Loss surgery
NCT ID NCT02819037
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at how gastric bypass surgery changes the bacteria in the small intestine. Researchers measured hydrogen in the breath of 51 severely obese patients before surgery and at several points up to 2 years after. The goal was to find out how often bacterial overgrowth occurs and how it relates to digestion and nutrient absorption.
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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
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Locations
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Centre Hospitalier d'Arras
Arras, 62022, France
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Centre Hospitalier de Douai
Douai, 59507, France