RecruitingNot ApplicableNCT07231484

Effects of Grape Consumption on the Immune-Gut Axis in Obesity

Effects of Grape Consumption on Immune and Gut Health in the Setting of Obesity


Sponsor

University of Missouri-Columbia

Enrollment

50 participants

Start Date

Dec 19, 2025

Study Type

INTERVENTIONAL

Conditions

Summary

This study is investigating the benefits of whole freeze-dried grape powder consumption on the immune-gut axis in adults with obesity.


Eligibility

Min Age: 30 YearsMax Age: 45 Years

Inclusion Criteria7

  • Age: 30-45 years
  • Obesity with BMI of 30-45 kg/m2
  • Willingness to consume study foods
  • Consistent diet and activity patterns for 4 weeks
  • Weight stable (<5kg change over last 3 months)
  • Non-smoker > 1 year or more
  • Not currently consuming an extremely healthy diet

Exclusion Criteria14

  • Study food allergies
  • Regular consumption of grapes or grape-derived products
  • Gastrointestinal disease and/or bariatric surgery
  • Uncontrolled hypertension and blood pressure >180/110
  • Diabetes
  • Clinical Depression
  • Illicit drug use
  • History of alcohol or drug abuse
  • Recent use of medications that affect immune function (e.g., corticosteroids)
  • Recent consumption of antibiotics, prebiotics, probiotics, symbiotics, or dietary supplements containing fiber or phytochemicals
  • Pregnant or lactating individuals
  • HIV positivity
  • Recent start of medications that affect metabolism or appetite
  • Drug therapy for coronary artery disease, peripheral artery disease, congestive heart failure, or dyslipidemia

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Interventions

OTHERFreeze-dried grape powder

48 g/day oral consumption during the 4-week active period.

OTHERPlacebo powder

Isocaloric placebo matched to grape powder; oral consumption during the 4-week active period.


Locations(1)

University of Missouri-Columbia

Columbia, Missouri, United States

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NCT07231484


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