Wine waste chocolate may help hearts, tiny study hints

NCT ID NCT05545865

Recruiting now Knowledge-focused Sponsor: University of California, Davis Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This University of California, Davis study is testing whether chocolate made from chardonnay grape leftovers (called marc) can improve blood vessel function and reduce oxidative stress. Five adults with higher body weight and slightly reduced blood vessel flexibility will eat different chocolate products and have their vascular and metabolic responses measured. The goal is to gather initial data to design larger future studies.

What this could mean

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

Active substance: Chardonnay marc chocolate and cocoa products
What this could lead to: If it works, this could point toward a tasty way to support heart health using wine-making byproducts.
What could go wrong: This is a tiny early study with only 5 people, so results may not apply to everyone. It's designed to gather data, not to prove a treatment works.

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.

cardiovascular disorder vascular ectasia

As listed by the trial registrant

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

CARDIOVASCULAR DISEASES OXIDATIVE STRESS VASCULAR DILATION

Contacts and locations

Locations

Academic Surge, University of California, Davis
RECRUITING

Davis, California, 95616, United States

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