Grape powder shows promise for gut and heart health in new study

NCT ID NCT06544954

Recruiting now Disease control Sponsor: University of California, Davis Source: ClinicalTrials.gov ↗

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study tests whether eating grape powder daily for 3 weeks can improve gut health, reduce inflammation, and improve blood vessel function in 40 overweight adults aged 45-70. Participants will drink grape or placebo powder twice a day and provide blood and stool samples. The goal is to see if grapes can act as a prebiotic to support heart and metabolic 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 grape powder
What this could lead to: If it works, this could point toward a simple dietary supplement to improve heart and gut health in overweight adults.
What could go wrong: This is a small, early-stage trial with only 40 people over 3 weeks. Results may not apply to everyone, and the effect may be small or not last.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Dysbiosis hypertensive disorder Inflammation inflammatory disease

As listed by the trial registrant

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

ARTERIAL STIFFNESS BLOOD PRESSURE DYSBIOSIS INFLAMMATION PERMEABILITY; INCREASED

Contacts and locations

Locations

Ragle Human Nutrition Center
RECRUITING

Davis, California, 95616, United States

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