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Could kimchi boost your gut health? new study investigates

NCT ID NCT07435831

Knowledge-focused Sponsor: University of California, Davis 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at how eating kimchi, a fermented cabbage dish, affects the gut microbiome and overall health in healthy adults. Sixty participants will eat either kimchi or non-fermented cabbage daily for three weeks. Researchers will measure changes in gut bacteria, digestion-related markers, and heart health indicators through blood and stool samples.

What this could mean

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

Active substance
kimchi (fermented cabbage)
What this could lead to
If it works, this could show that eating kimchi improves gut health by increasing beneficial bacteria and producing helpful compounds.
What could go wrong
This is a small, early-stage study in healthy adults, so results may not apply to everyone. It only lasts 3 weeks, so long-term effects are unknown.

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 60 people

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

Started

Mar 2026

Expected to finish

Dec 2029

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

19 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: * BMI of 25-30 kg/m2 * No or occasional consumption of kimchi (3 or fewer times per week) * Willing to eat study food every day for 3 weeks * Willing to participate in study protocols Exclusion Criteria: * Allergy to cabbage and /or cruciferous family vegetables * Allergy to kimchi ingredients such as shellfish and fish sauce * Daily consumption of kimchi * Diagnosed digestive issues such as irritable bowel syndrome (IBS) or gastrointestinal inflammatory bowel disease (IBD) or conditions such as Crohn's disease * Previous bowel surgery that disrupts the digestive flow, motility or gastric emptying process * Antibiotics used in the 2 months prior to enrollment * Unwillingness to discontinue probiotics during study and washout period * Active diagnosis and/or treatment for cancer

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As listed by the trial registrant

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

Healthy adult participants

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. 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

    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

  • Ragle Human Nutrition Center

    RECRUITING

    Davis, California, 95616, United States

  • UC Davis Ragle Human Nutrition Research Center

    RECRUITING

    Davis, California, 95616, United States

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