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Probiotics for teen stress: a Gut-Brain boost?

NCT ID NCT07565883

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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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

Summary

This study tested whether a daily probiotic supplement could support emotions, thinking skills, and immune function in 104 adolescents with moderate stress. Participants took either probiotics or a placebo for 12 weeks. Researchers measured mood, memory, attention, and immune markers. The goal was to explore potential benefits, not to treat or cure any condition.

What this could mean

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

Active substance
probiotic blend (Lactobacillus plantarum and Lactobacillus brevis)
What this could lead to
If it works, this could point toward a simple dietary supplement to help teens manage stress and support brain and immune health.
What could go wrong
This is an early exploratory study, not designed to prove treatment effects. Results may not be conclusive or generalizable to all teens.

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

104 people

The number who actually took part.

Started

May 2022

Finished

Nov 2024

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

12 to 20 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: 1. Participants: Males and females 2. Participants: 12-20 years old 3. Participants with sustained moderate stress levels as determined by the Perceived Stress Scale (PSS), average score 14-26 4. Participants with BMI percentile \>5% and \<97% 5. Participants receiving or not receiving cognitive behavioral therapy. Exclusion Criteria: 1. Participants less than 12 years of age or over 20 years of age at enrollment. 2. Participants with PSS average scores less than 14 and more than 26. 3. Participants with BMI percentile \<5% or \>97% 4. Participants receiving selective serotonin reuptake inhibitors (SSRIs). 5. Participants who take any nutraceutical having an effect on stress anxiety within 1 month before subject screening. 6. Participants who are female and report being pregnant. 7. Participants receiving immunosuppressive therapy. 8. Participants having immune deficiencies. 9. Adverse reactions to any probiotic.

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As listed by the trial registrant

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

Cognitive ability general Emotions Immune system function

Contacts and locations

Locations

  • Division Clinical Pharmacology, SOM, University of Utah

    Salt Lake City, Utah, 84108, United States

  • University of Utah, Pediatrics and Primary Childrens Hospital

    Salt Lake City, Utah, 84108, United States

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