100,000 poop samples could unlock secrets of gut health and disease
NCT ID NCT05758961
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study aims to collect 100,000 fecal samples from adults living in France to better understand the gut microbiome—the community of bacteria in our intestines. Researchers will analyze how diet, lifestyle, age, and health conditions like diabetes, obesity, and Parkinson's disease relate to differences in gut bacteria. The goal is to create a detailed map of gut microbiome diversity, which could help scientists develop future treatments or prevention strategies.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- What this could lead to
- If successful, this could reveal how gut bacteria vary with diet and disease, potentially guiding future treatments for conditions like diabetes, obesity, and Parkinson's.
- What could go wrong
- This is an observational study, not a treatment trial. It may not directly lead to cures, and findings might not apply to people outside France.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Participants
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About 100,000 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Sep 2022
- Expected to finish
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Sep 2042
An estimate. End dates often move.
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
Who is studied
General population residing in France
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Persons over the age of 18 living in France. * Consent form signed electronically. Non inclusion Criteria: * Non-adult person (declarative); * Person not living in France (declarative); * Persons subject to a protective measure, in particular under guardianship or curatorship or unable to express their consent (declarative); * Person having had a colectomy (declarative); * Person with a digestive stoma (declarative); * Person who has not signed the consent; * Person who did not answer the entry questionnaire; * Person who has not sent a compliant stool sample; * Antibiotic intake in the 3 months before inclusion (declarative); * Performing a colonoscopy in the 3 months preceding inclusion (declarative).
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Centre de Recherche sur Volontaire
RECRUITINGBobigny, 93000, France
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