Anti-inflammatory Activities of Vitamin C Supplementation on the Gut Barrier Function in Adults With Obesity
Eligible age
18–50 yrs
Accepts
All genders
Locations
1 state
Healthy volunteers
No
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About this study
This study is testing whether taking vitamin C every day can help improve gut health and reduce inflammation in adults with obesity. Poor gut health-sometimes called "leaky gut"-can allow harmful substances from bacteria to enter the bloodstream, which may lead to inflammation and increase the risk of heart disease and liver problems. Participants will complete two study periods, each lasting two weeks, with a two-week break in between. In one period, they will take vitamin C; in the other, a placebo. During each period, researchers will collect blood, urine, and stool samples, ask participants to track their diet and activity, and perform a test to measure gut permeability. There are minimal risks, such as discomfort from blood draws or temporary stomach upset from a sugar drink. While participants may not directly benefit, their involvement will help researchers learn whether vitamin C is a safe and effective way to improve gut health in people with obesity.
Sponsor: Ohio State University
You may qualify if…
- ✓ English speaking
- ✓ Men and women between 18-50 years of age
- ✓ BMI 30-40 kg/m²
- ✓ Resting blood pressure \<140/90 mm Hg
- ✓ No use of multivitamin/vitamin C supplement within past 1-month
- ✓ Non-vegetarian/non-vegan
- ✓ Willingness to follow a diet low in fruits and vegetables for two, 2-week periods
You may not qualify if…
- ✕ Current smoker or vaper, including tobacco, cannabis, or nicotine products
- ✕ Alcohol consumption \>2 drinks/day
- ✕ Use of antibiotics within past 1-month
- ✕ Use of probiotic supplements within past 1-month
- ✕ Use of anti-inflammatory drugs within past 1-month
- ✕ Individuals with unmanaged or poorly controlled diabetes, dyslipidemia, hypertension
- ✕ Known history of bleeding disorders, hemochromatosis, or kidney stones
- ✕ For Women: Pregnancy, lactation, or change in birth control within the past 3-months
Where it's recruiting
Columbus
Source: ClinicalTrials.gov · NCT07151105 · last updated 2025-10-24