Effects of Grape Powder on Psychological Distress and Gut Microbiota in College Students
NCT ID: NCT07214428
Last Updated: 2026-01-15
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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ACTIVE_NOT_RECRUITING
NA
50 participants
INTERVENTIONAL
2025-10-20
2026-05-30
Brief Summary
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Does FTGP reduce anxiety, depression, and perceived stress? Does FTGP improve the gut microbiota? Researchers will compare FTGP to a placebo to see how FTGP affects psychological distress and gut microbiota.
Participants will:
Drink a daily supplement containing FTGP or a placebo for 4 weeks. Record consumption of grape powder or placebo in a compliance log. Complete surveys and provide stool samples. Three in-person visits.
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Detailed Description
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Conditions
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Study Design
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RANDOMIZED
PARALLEL
BASIC_SCIENCE
DOUBLE
Study Groups
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freeze-dried table grape powder (FTGP)
Drink a daily supplement containing FTGP for 4 weeks
freeze-dried table grape powder
48g freeze-dried table grape powder/day for 4 weeks
Placebo
Drink a daily supplement containing a placebo for 4 weeks
Placebo
48g placebo/day for 4 weeks
Interventions
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freeze-dried table grape powder
48g freeze-dried table grape powder/day for 4 weeks
Placebo
48g placebo/day for 4 weeks
Eligibility Criteria
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Inclusion Criteria
* Able to give written informed consent.
* BMI 18.5-24.9 kg/m2
* Healthy (self-reported)
* Can read and speak English
Exclusion Criteria
* Currently using or have used antibiotics continuously for \>3 days within 3 months prior to enrollment
* Have had surgery involving the intestinal lumen within the last 30 days
* Have a documented diagnosis of celiac disease or/and inflammatory bowel diseases
* Are pregnant or breastfeeding
* Have prediabetes and diabetes
* Have had bariatric surgery
* Are immunocompromised ( e.g., cancer treatment, bone marrow/organ transplant, immune deficiency, or poorly controlled HIV/AIDS)
* Are unable to provide consent
* Are hospitalized,
* Have a history of or current alcohol, drug, or medication abuse (self-reported),
* Have contraindication to any substance in the investigational product or who are currently enrolled in other interventional trials
18 Years
30 Years
ALL
Yes
Sponsors
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California Table Grape Commission
OTHER
Rutgers, The State University of New Jersey
OTHER
Responsible Party
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Guojun Wu, Ph.D.
Assistant Research Professor
Principal Investigators
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Guojun Wu
Role: PRINCIPAL_INVESTIGATOR
Rutgers, The State University of New Jersey
Locations
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Department of Biochemistry and Microbiology, School of Environmental and Biological Sciences, Rutgers, The State University of New Jersey
New Brunswick, New Jersey, United States
Countries
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Provided Documents
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Document Type: Informed Consent Form
Other Identifiers
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Pro2025001394
Identifier Type: -
Identifier Source: org_study_id
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