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Gut check: probiotic may sharpen memory and tame blood sugar in prediabetes

NCT ID NCT07073781

Disease control Sponsor: Leeds Beckett University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 18, 2026 · Updated 2 times

Summary

This study tests whether taking a daily probiotic (Lab4P) for 12 weeks can improve memory, thinking speed, and blood sugar control in overweight adults aged 18-40 with prediabetes (mildly high blood sugar). Seventy participants will be randomly assigned to receive either the probiotic or a placebo. The goal is to see if improving gut health can help both the brain and metabolism.

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 70 people

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

Started

Aug 2025

Expected to finish

Aug 2027

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 40 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 18-40 years * Body Mass Index (BMI) between 25.0 and 29.9 kg/m² (classified as overweight) * In good general health (self-reported) * Normal self-reported sleep patterns, with no history of diagnosed sleep disorders * Willing and able to provide informed consent * Able to comply with study procedures, including fasting and oral glucose tolerance testing Exclusion Criteria: * Diagnosed diabetes (any type). * Diagnosed sleep disorders. * Fasting glucose \>6.9 mmol/L during screening. * History of bariatric surgery (e.g., gastric bypass, sleeve gastrectomy). * Major surgery, significant illness, trauma, infection, or myocardial infarction within the past 6 weeks. * Current use of medications affecting glucose metabolism or probiotics * Pregnancy or actively trying to conceive * Night shift work within the past month

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Conditions

The condition(s) this trial relates to.

cognitive disorder Cognitive Dysfunction glucose intolerance Insulin Resistance Overweight prediabetes syndrome

As listed by the trial registrant

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

Cognitive dysfunction Impaired glucose regulation Impaired glucose tolerance (prediabetes) Neurovascular coupling mechanism and cognitive function Overweight (bmi > 25) Prediabetes (insulin resistance, impaired glucose tolerance)

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

  • Leeds Beckett University

    RECRUITING

    Leeds, Greater Manchester, LS1 3HE, United Kingdom

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