Bile acid mystery: does gastric bypass change gut chemistry differently than dieting?
NCT ID NCT03238794
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at whether losing weight through gastric bypass surgery changes bile acids differently than losing weight through a strict low-calorie diet. Researchers will measure bile acid levels in stool samples from 21 people with obesity. The goal is to understand if the surgery has unique effects on digestion beyond just weight loss.
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 surgery and low-calorie diet
- What this could lead to
- If successful, this could help explain why gastric bypass surgery may have metabolic benefits beyond just weight loss.
- What could go wrong
- This is a very small, early study with only 21 participants, so results may not apply to everyone. It is designed to observe differences, not to test a new treatment.
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
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Mayo Clinic in Rochester
Rochester, Minnesota, 55905, United States
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