Clinical trial Recruiting at 1 site Interventional Ages 20 to 65 Women only

Using blueberries to improve health in women with prediabetes

Official title: Wild Blueberries for Gut, Brain, and Cardiometabolic Health in Female Adults With Prediabetes.

Run by Georgia State University · NCT06735651 · Data updated 2026-11-12

This study is testing if eating freeze-dried wild blueberry powder can help improve health, brain function, and gut health in women with prediabetes.

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Quick facts

Study typeInterventional
Ages20 Years to 65 Years
SexWomen only
Enrollment30 (estimated)
SponsorGeorgia State University
Academic / other
Locations1 site (Atlanta, Georgia)
StatusRecruiting
StartedSeptember 20, 2024
Main results expectedJune 1, 2027
Study endsSeptember 1, 2027
Registry record updatedSeptember 2, 2026
Trial IDNCT06735651 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates for this study are women aged 45-65 years with prediabetes and a body mass index between 25-30 kg/m².

Probably not a fit

Patients with allergies to berries, active cancer, or other significant health conditions may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to evaluate the effects of freeze-dried wild blueberry powder on cardiometabolic health, cognitive function, and gut microbiota in adult women with prediabetes. The study will involve a six-week randomized, placebo-controlled design where participants will consume either blueberry powder or a placebo daily. Researchers will measure changes in health parameters such as blood glucose levels, cognitive performance, and gut health to determine the effectiveness of blueberries as a dietary intervention. This research is significant as it addresses a gap in understanding the impact of blueberries on health outcomes specifically in women with prediabetes.

Why it matters

Potential benefit: If successful, this study could provide a natural dietary intervention to improve health outcomes for women with prediabetes.

How similar studies have gone: While there have been studies showing health benefits of blueberries in various populations, this specific approach in women with prediabetes is novel and has not been extensively tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
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

Where it's running

  • Georgia State University
    Atlanta, Georgia, United States
    Recruiting

Study contacts

  • Principal investigator: Rafaela G Feresin, PhD — Georgia State University
  • Study coordinator: Rafaela G Feresin, PhD
  • Email: berries@gsu.edu
  • Phone: 404-413-1233

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.