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Fiber fix for stress? new study tests Gut-Brain power

NCT ID NCT07201909

Symptom relief Sponsor: Myota GmbH Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 tests whether taking a daily prebiotic fiber blend for 12 weeks can lower stress levels in healthy adults who feel mild to severe stress. Participants will take either the fiber powder or a placebo and report their stress, mood, and anxiety. The goal is to see if feeding gut bacteria can improve how we feel.

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 156 people

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

Started

Oct 2025

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 50 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Aged 18-50 years of age * Capacity to give informed consent to participate in the study * Able to comply with study requirements and visits * Meet the range required for mild-severe stress levels (as assessed by DASS-42 stress subscale) * Normal or corrected to normal vision and/or hearing Exclusion Criteria: * Current smoker * Having food allergies and/or intolerances * Diagnosis of Type 1 or 2 diabetes or cardiovascular disease or psychiatric or neurological conditions (e.g. schizophrenia, dementia) including eating disorders * Current or previous diagnosis of depression in past 6 months * Receiving medications that lower cholesterol, blood pressure, blood glucose levels, or improve insulin sensitivity * Receiving antidepressant or anti-anxiety medications or treatments * Receiving hormonal birth control * Perimenopause or menopause * Pregnancy, lactation, or an intent to become pregnant during the course of the study * Continuous antibiotic use for \> 3 days within 1 month prior to enrolment * Continuous use of weight-loss drug for \> 1 month before screening * Major change in dietary intake in past month (e.g. excluding whole food groups) * Currently consuming daily prebiotic or probiotic supplements * Prior use (\< 6 months) of any blood glucose or cholesterol lowering medication * Any significant GI condition affecting GI absorption including (but not limited to) inflammatory bowel disease, weight loss surgery, irritable bowel disease. * End stage renal disease * Active cancer, or treatment for any cancer, in last 3 years * Consuming more than 20g of fibre a day as assessed by the 18-item FiberScreen

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Conditions

The condition(s) this trial relates to.

anxiety disorder Depression Inflammation

As listed by the trial registrant

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

Stress

How to take part

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

  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

    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

  • CALM Study Site

    RECRUITING

    London, EC2A 4BQ, United Kingdom

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