Yellow Potatoes and Carotenoids | NCT07606001

Studies
Yellow Potatoes and Carotenoids

NCT07606001

Sponsor

University of Florida

Status

Recruiting

Last Update Posted

Jun 11, 2026Actual

Enrollment

30Estimated

Phase

Not Applicable

Conditions

Carotenoids

Interventions

Yellow-flesh potatoes
White-flesh potatoes

Countries

United States

Protocol Section

Identification Module Status Module Sponsor/Collaborators Module Oversight Module Description Module Conditions Module Design Module Arms/Interventions Module Outcomes Module Eligibility Module Contacts/Locations Module References Module IPD Sharing Statement Module

Results Section

Participant Flow Module Baseline Characteristics Module Outcome Measures Module Adverse Events Module More Info Module

Annotation Section

Annotation Module

Document Section

Large Document Module

Derived Section

Miscellaneous Info Module Condition Browse Module Intervention Browse Module

Protocol Section

Identification Module

NCT ID

Results Section

No data available

No data is available for this block.

Annotation Section

No data available

No data is available for this block.

Document Section

No data available

No data is available for this block.

Derived Section

Miscellaneous Info Module

Version Holder

Status Module

Record Verification Date

May 2026

Overall Recruitment Status or Expanded Access Status

Recruiting

Last Known Status

Not provided

Delayed Posting

Not provided

Why Stopped

Not provided

Expanded Access Info

Start Date

May 28, 2026Actual

Primary Completion Date

Aug 31, 2026Estimated

Completion Date

Dec 15, 2026Estimated

First Submitted Date

May 18, 2026

First Submission Date that Met QC Criteria

May 18, 2026

First Posted Date

May 26, 2026Actual

Results Waived

Not provided

Results First Submitted Date

Not provided

Results First Submitted that Met QC Criteria

Not provided

Results First Posted Date

Not provided

Certification/Extension (aka Delayed Results) First Submitted Date

Not provided

Certification/Extension First Submitted that Passed QC Review

Not provided

Certification/Extension First Posted Date

Not provided

Last Update Submitted Date

Jun 9, 2026

Last Update Posted Date

Jun 11, 2026Actual

Oversight Module

Has Data Monitoring Committee (DMC)

Is FDA Regulated Drug

Is FDA Regulated Device

Is Unapproved Device

Not provided

Pediatric Postmarket Surveillance of a Device Product

Not provided

Product Exported from US

Not provided

FDAAA801 Violation

Not provided

Description Module

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.

Detailed Description

Not provided

Design Module

Study Type

Interventional

Number of References to an Expanded Access Study

Not provided

Expanded Access Types

Not provided

Patient Registry

Not provided

Target Follow-Up Duration

Not provided

Phases

Not Applicable

Interventional Study Design

Allocation

Biospecimen

No data available

No data is available for this block.

Enrollment

30Estimated

Arms/Interventions Module

Arm Groups

Label	Type	Description	Intervention Names
Yellow-flesh potatoes	Experimental	250 g of yellow-flesh potatoes	Other: Yellow-flesh potatoes
White-flesh potatoes	Placebo Comparator	250 g of white-flesh potatoes	Other: White-flesh potatoes

Interventions

Name	Type	Description	Arm Group Labels	Other Names
Yellow-flesh potatoes	Other	Participants will consume 250 g daily of yellow-flesh potatoes.	Yellow-flesh potatoes

Outcomes Module

Primary Outcomes

Measure	Description	Time Frame
Plasma zeaxanthin	Plasma concentration of zeaxanthin	28 days

Secondary Outcomes

Measure	Description	Time Frame
Plasma lutein	Plasma concentration of lutein	28 days
Skin carotenoid content	Skin carotenoid content by reflection spectroscopy	28 days

Other Outcomes

Not provided

Eligibility Module

Eligibility Criteria

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

Accepts Healthy Volunteers

Yes

Sex

All

Sex/Gender Based

Not provided

Sex/Gender Description

Not provided

Minimum Age

18 Years

Maximum Age

80 Years

Standard Ages

AdultOlder Adult

Study Population

Not provided

Sampling Method

Not provided

Contacts/Locations Module

Central Contacts

Name	Role	Phone	Extension	Email
Wendy J Dahl, PhD	Contact	352-294-3707		wdahl@ufl.edu

Overall Officials

Not provided

Locations

Facility	Status	City	State	ZIP	Country	Contacts
University of Florida	Recruiting	Gainesville	Florida	32611	United States

IPD Sharing Statement Module

Plan to Share IPD

Undecided

Description

Not provided

Types

Not provided

Time Frame

Not provided

Access Criteria

Not provided

URL

Not provided