Carotenoids
Conditions
Keywords
sweet corn, lutein, zeaxanthin, carotenoid
Brief summary
This study will assess the effect of daily yellow and white sweet corn intake on serum lutein and zeaxanthin concentrations. Skin carotenoid levels using the Veggie Meter will be assessed, and gastrointestinal symptoms and changes in fecal microbiota during a 4-week intervention period will be monitored.
Interventions
DIETARY_SUPPLEMENTYellow Sweet Corn
Participants will consume 1.5 cups daily of yellow or white canned sweet corn.
DIETARY_SUPPLEMENTWhite Sweet Corn
1.5 cups daily of canned yellow sweet corn
Sponsors
University of Florida
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
OTHER
Masking
SINGLE (Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to 90 Years
Healthy volunteers
Yes
Inclusion criteria
* Adults ≥ 18 years of age * Able to provide written consent in English * Baseline Veggie Meter score of ≤ 300 (Scale from 0 to 850) * Willing to adhere to study procedures
Exclusion criteria
* Baseline Veggie Meter score of \>300 * Corn allergy * Current use of laxatives or antidiarrheal medications * Previously or currently being treated for intestinal disease, including irritable bowel syndrome, Crohn's disease, ulcerative colitis, celiac disease, or gastrointestinal cancer * Previous gastrointestinal surgery (e.g., gastric bypass, fundoplication, bowel resection) * Current cancer treatment * Current pregnancy * Vegetarian diet * Elite athletes or long-distance runners. * Use of antibiotic drugs within 1 month of the screening visit.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Serum concentration of lutein + zeaxanthin | 28 days | Sum of serum concentrations of lutein and zeaxanthin. |
Countries
United States
Outcome results
None listed