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Carotenoids in the Skin and Immune Aging | Clinical Trials | Clareo Health

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RECRUITINGNCT07221643

Carotenoids in the Skin and Immune Aging

This study aims to examine the connection between the level of carotenoids in the skin and a number of immune related health parameters.

Lead sponsor: Stanford University•1 U.S. locations•View source on ClinicalTrials.gov

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Contacts

Xiaochen Zhong, BA

CONTACT

408-816-0111 xczhong@stanford.edu

Po-Han Ho, MD

CONTACT

pohanho@stanford.edu

Sponsors

Lead Sponsor

Stanford University

Age

18 - No limit years

Sex

ALL

Healthy Volunteers

Yes

Inclusion Criteria

•Willing and able to provide written informed consent
•Age 18-30 years OR 65 years and older
•Healthy individuals without uncontrolled medical conditions (over the counter inhaled and topical steroids allowed)
•Fiitzpatrick I-VI (all skin types)

Exclusion Criteria

•Pregnant or breastfeeding
•uncontrolled medical conditions
•Skin conditions on the upper extremity that would interfere with skin measurements of carotenoid levels such as active atopic dermatitis or psoriasis
•Concurrent use of medications that affect the immune system, within 4 weeks of enrollment (eg. prednisone, biologics, methotrexate, rapamycin, prescription topical steroids, prescription inhaled steroids, others)
•Unable to follow study protocol

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Data from ClinicalTrials.govLast updated on ClinicalTrials.gov: December 15, 2025Terms

Trial snapshot

StatusRECRUITING

Phase—

Enrollment40

Start dateOct 2025

Last updatedDec 15, 2025

Condition

No Condition Skin Carotenoids and Immune-aging

Locations shown

Stanford Health - General Dermatology Clinic

Redwood City, California

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Data Source & Attribution

This clinical trial information is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health.

ClinicalTrials.gov last update: December 15, 2025Data synced to Clareo: May 10, 2026

Modifications: This data has been reformatted for display purposes. Eligibility criteria have been parsed into inclusion/exclusion sections. Location data has been geocoded to enable distance-based search. For the authoritative and most current information, please visit ClinicalTrials.gov.

Neither the United States Government nor Clareo Health make any warranties regarding the data. Check ClinicalTrials.gov frequently for updates.

View ClinicalTrials.gov Terms and Conditions