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Tiny study reveals gut secrets after eating bananas and peanuts

NCT ID NCT05951972

Knowledge-focused Sponsor: Eran Elinav Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 26, 2026

Summary

This completed study looked at small molecules in the guts of 6 healthy volunteers after they ate bananas, apples, cucumbers, and peanuts. Researchers analyzed stool samples to see how these foods changed gut bacteria and related molecules. The goal was to better understand the healthy gut, not to treat any disease.

What this could mean

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

Active substance
bananas, apples, cucumbers, peanuts
What this could lead to
If successful, this could help scientists understand how different foods affect gut bacteria and molecules in healthy people.
What could go wrong
This is a very small study with only 6 participants, so findings may not apply to everyone. It is exploratory and not designed to test a treatment.

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

6 people

The number who actually took part.

Started

Apr 2023

Finished

Aug 2025

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 70 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: * Normal BMI * Age 18-70 Exclusion Criteria: * Known food allergies to the tested food items * Chronic constipation (less than one bowel movement every two days) * Chronic treatment with any drug upon enrolment. * The use of systemic antibiotics, probiotics, or proton pump inhibitors 3 months prior to enrollment. * Diagnosis of type 1 or type 2 diabetes. * Any chronic disease at the discretion of the study team- such as active or recent cancer, inflammatory bowel disease, systemic autoimmunity * Any psychiatric disorders * Alcohol or substance abuse * Gut-related surgery, including bariatric surgery, but not including previous appendectomy. * Pregnancy, breastfeeding, or fertility treatments 6 months prior to enrollment for female participants

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As listed by the trial registrant

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

Nutrition, healthy

Contacts and locations

Locations

  • Weizmann Institute of Science

    Rehovot, Israel

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