Carotenoids
Conditions
Keywords
lutein, zeaxanthin, carotenoid, potatoes
Brief summary
This study will assess the effects of daily intake of yellow and white potatoes on plasma lutein and zeaxanthin concentrations. Skin carotenoid levels will be assessed using the Veggie Meter.
Interventions
OTHERYellow-flesh potatoes
Participants will consume 250 g daily of yellow-flesh potatoes.
OTHERWhite-flesh potatoes
Participants will consume 250 g daily of white-flesh potatoes.
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 80 Years
Healthy volunteers
Yes
Inclusion criteria
* Adults ≥ 18 years of age * Able to provide written consent in English * Baseline Veggie Meter score of ≤ 300 * Willing to adhere to study procedures
Exclusion criteria
* Baseline Veggie Meter score of \>300 * Potato allergy * 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
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Plasma zeaxanthin | 28 days | Plasma concentration of zeaxanthin |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Plasma lutein | 28 days | Plasma concentration of lutein |
| Skin carotenoid content | 28 days | Skin carotenoid content by reflection spectroscopy |
Countries
United States
Outcome results
None listed