Breath test reveals gut bacteria changes after Weight-Loss surgery
NCT ID NCT02819037
First seen Dec 29, 2025 · Last updated May 14, 2026 · Updated 21 times
Summary
This study looked at how gastric bypass surgery affects bacteria in the small intestine. Researchers used a simple breath test to measure hydrogen levels, which can indicate bacterial overgrowth. Fifty-one people with severe obesity were tested before surgery and at several points up to two years after. The goal was to understand how the surgery changes gut bacteria and digestion.
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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.
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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Locations
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Centre Hospitalier d'Arras
Arras, 62022, France
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Centre Hospitalier de Douai
Douai, 59507, France
Conditions
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