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Blueberry powder could be a sweet fix for prediabetes

NCT ID NCT06735651

Disease control Sponsor: Georgia State University 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 27, 2026 · Last updated Sep 03, 2026 · Updated 2 times

Summary

This study tests whether a daily dose of freeze-dried wild blueberry powder can improve blood sugar, blood pressure, and brain function in women with prediabetes. Thirty overweight women aged 20-65 will take either the blueberry powder or a placebo for six weeks. Researchers will measure changes in glucose, insulin, blood pressure, and gut health.

What this could mean

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

Active substance
freeze-dried wild blueberry powder
What this could lead to
If it works, this could point toward a simple dietary supplement to help manage prediabetes and related health issues in women.
What could go wrong
This is a small, early-stage trial with only 30 participants, so results may not apply widely. The effect may be modest or no different from placebo.

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 30 people

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

Started

Sep 2024

Expected to finish

Sep 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

20 to 65 years

Sex

Female participants only

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: * Women aged 20-65 years old * Prediabetes (fasting blood glucose 100-125 mg/dL and/or HbA1c percentage between 5.7-6.4) * Body Mass Index between 25-30 kg/m\^2 Exclusion Criteria: * Allergies to berries * Use of insulin, antidiabetic, antibiotics, and anti-inflammatory drugs * Active cancer, gastrointestinal, renal, thyroid, stage 1 \& 2 hypertension and other cardiovascular diseases, neurological diseases, or severe head injury * Smoking * Consumes greater than 2 alcoholic beverages per day * Consumes antioxidant, probiotic, and prebiotic supplements * Pregnant or Lactating * Actively participating in a weight loss program * Currently taking berry supplements or recently participated in another study taking berry supplements

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Conditions

The condition(s) this trial relates to.

cognitive disorder glucose intolerance Hyperemia Inflammation inflammatory disease Insulin Resistance Overweight prediabetes syndrome type 2 diabetes mellitus

As listed by the trial registrant

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

Adult Arterial stiffness Body composition Cognition Endothelial function (reactive hyperemia) Female Gut microbiota Inflammation Microvascular function Overweight Oxidative stress 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

  • Georgia State University

    RECRUITING

    Atlanta, Georgia, 30303, United States

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