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Chicory fiber study seeks to unlock secrets of gut microbe changes

NCT ID NCT06528041

Knowledge-focused Sponsor: Purdue University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

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

Summary

This study looks at how a prebiotic fiber from chicory root (inulin) changes gut bacteria in healthy adults aged 18-45. Over 13 weeks, participants take either inulin or a placebo (maltodextrin) and provide stool and blood samples. Researchers track changes in Bifidobacterium and other gut microbes, along with bowel habits, mood, and appetite. The goal is to understand why people's gut bacteria respond differently to the same fiber.

What this could mean

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

Active substance
chicory inulin (a prebiotic fiber supplement)
What this could lead to
If successful, this study could reveal how individuals respond differently to prebiotic fiber, helping personalize dietary recommendations for gut health.
What could go wrong
This is an early-stage, small study (52 healthy adults) focused on measuring changes, not treating a disease. Results may not apply to people with health conditions.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 52 people

The number the study aims to enrol. It can still change while the study runs.

Started

Aug 2024

Expected to finish

Jul 2026

An estimate. End dates often move.

Lead sponsor

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.

Ages

18 to 45 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show 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: * adults aged 18-45 * BMI \>18.5 - \< 30 kg/m2 * Regular bowel movements (\> 4 days per week) Exclusion Criteria: * Self-reported sensitivity to FODMAPs and following a low FODMAP diet ((FODMAPS stands for fermentable oligosaccharides, disaccharides, monosaccharides and polyols). * Self-reported food allergies and sensitivities including gluten, dairy, nuts, soya and lactose etc. * Self-reported antibiotic treatment in the past 6 months. * Self-reported history of gastrointestinal disease and/or heart disease, cardiovascular, liver, and respiratory disorders, cancer and/or clinically relevant (pre) diabetes. * Self-reported to having undergone major surgery of the gastrointestinal tract, with the exception of cholecystectomy and appendectomy. * Self-reported smoking and/or self-reported drug or alcohol abuse. * Self-reported history of psychiatric and/or mood disorders including eating disorders. * Self-reported to be following a restrictive diet (i.e. ketogenic, intermittent fasting). * Pregnant and lactating women.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Healthy

How to take part

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  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Purdue University

    RECRUITING

    West Lafayette, Indiana, 47907, United States

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