Sweet Corn and Carotenoids

NCT ID: NCT06892444

Last Updated: 2026-01-22

Study Results

Results pending

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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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

40 participants

Study Classification

INTERVENTIONAL

Study Start Date

2025-05-14

Study Completion Date

2026-12-31

Brief Summary

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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.

Detailed Description

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Conditions

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Carotenoids

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

OTHER

Blinding Strategy

SINGLE

Outcome Assessors

Study Groups

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Yellow Sweet Corn

1.5 cups of yellow sweet corn daily

Group Type EXPERIMENTAL

Yellow Sweet Corn

Intervention Type DIETARY_SUPPLEMENT

Participants will consume 1.5 cups daily of yellow or white canned sweet corn.

White Sweet Corn

1.5 cups of white sweet corn daily

Group Type SHAM_COMPARATOR

White Sweet Corn

Intervention Type DIETARY_SUPPLEMENT

1.5 cups daily of canned yellow sweet corn

Interventions

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Yellow Sweet Corn

Participants will consume 1.5 cups daily of yellow or white canned sweet corn.

Intervention Type DIETARY_SUPPLEMENT

White Sweet Corn

1.5 cups daily of canned yellow sweet corn

Intervention Type DIETARY_SUPPLEMENT

Eligibility Criteria

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Inclusion Criteria

* Adults ≥ 18 years of age
* Able to provide written consent in English
* Baseline Veggie Meter score of ≤ 250 (Scale from 0 to 850)
* Willing to adhere to study procedures

Exclusion Criteria

* Baseline Veggie Meter score of \>250
* 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.
Minimum Eligible Age

18 Years

Maximum Eligible Age

90 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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University of Florida

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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University of Florida

Gainesville, Florida, United States

Site Status

Countries

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United States

Other Identifiers

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IRB202500277

Identifier Type: -

Identifier Source: org_study_id

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