Effects of Chardonnay Marc on gut and heart health
Official title: The Influence of Chardonnay Marc Intake on Gut and Cardiometabolic Health
Run by University of California, Davis · NCT06476795 · Data updated 2026-11-12
This study is testing if adding Chardonnay grape skins and seeds to the diet can improve gut and heart health in obese postmenopausal women.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 45 Years to 70 Years |
| Sex | Women only |
| Enrollment | 5 (estimated) |
| Sponsor | University of California, Davis Academic / other |
| Locations | 1 site (Davis, California) |
| Status | Recruiting |
| Started | June 1, 2024 |
| Main results expected | June 2027 |
| Study ends | June 2027 |
| Registry record updated | August 7, 2026 |
| Trial ID | NCT06476795 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are postmenopausal women aged 45-70 with a BMI between 31-49.9 kg/m2 and elevated fasting triglycerides.
✕Probably not a fit
Patients who are on anticoagulants, have certain chronic health conditions, or follow restrictive diets 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 study investigates the impact of incorporating Chardonnay Marc, the skins and seeds of Chardonnay grapes, into the diet on gut and cardiometabolic health. Participants will consume varying amounts of Chardonnay Marc powder daily for 12 weeks, with assessments conducted at baseline, 6 weeks, and 12 weeks. The study aims to collect pilot data on changes in gut permeability, inflammation, and cardiometabolic markers in obese postmenopausal women. Participants will log their intake and how they incorporate the Marc into their meals.
Why it matters
Potential benefit: If successful, this study could provide a novel dietary approach to improve gut and cardiovascular health in obese individuals.
How similar studies have gone: While the specific use of Chardonnay Marc is novel, similar dietary interventions with flavanol-rich foods have shown promise in improving cardiovascular health.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Postmenopausal female, with a cessation of menses for at least 2 years * 45-70 years of age * BMI 25- 49.9 kg/m2 * Fasting triglycerides \> 120 mg/dL * Subject is willing and able to comply with the study protocols and procedures. Exclusion Criteria: * Self-reported use of daily anticoagulation agents including aspirin, NSAIDs * Prescription medications and supplements, except for a 6 month stable dose of thyroid medications * Vegan, Vegetarians, food faddists or those consuming a non-traditional diet * Fruit consumption ≥ 3 cups/day * Vegetable consumption ≥ 4 cups/day * Coffee/tea ≥ 3 cups/day * Dark chocolate ≥ 3 oz/day * Self-reported restriction of physical activity due to a chronic health condition * Self-reported chronic/routine high intensity exercise * Blood pressure ≥ 140/90 mm Hg * Self-reported renal or liver disease * Self-reported heart disease, which includes cardiovascular events and stroke, diabetes * Peripheral artery disease Raynaud's syndrome or disease * Inability to properly place or wear the PAT probes or abnormal measurements on pre-screening PAT * Self-reported cancer within past 5 years * Self-reported gastrointestinal disorders, apart from appendix removal * Unwillingness to stop any supplement use, including herbal, plant or botanical, fish oil, oil supplements six weeks prior to study enrollment. * Indications of substance or alcohol abuse within the last 3 years * All forms of smoking (e.g. vaping, cigarette, cannabis) * Current enrollee in a clinical research study.
Where it's running
-
University of California, Davis
Davis, California, United States Recruiting
Study contacts
- Study coordinator: Roberta R Holt, PhD
- Email: rrholt@ucdavis.edu
- Phone: 5304005952
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.