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Carotenoids in the Skin and Immune Aging
RecruitingObservational studyHealthy volunteers welcome
Carotenoids in the Skin and Immune Aging: a Pilot Observational Study
Who can join
Ages 18 and older · All sexes · Healthy volunteers welcome
Full eligibility criteria
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
About the study
This study aims to examine the connection between the level of carotenoids in the skin and a number of immune related health parameters.
Sponsor: Stanford University · Participants: 40 · Started: Oct 9, 2025
Contact the study team
- Xiaochen Zhong, BA · Phone: 408-816-0111
Official record on ClinicalTrials.gov — NCT07221643
Locations in the U.S.
| California | Stanford Health - General Dermatology Clinic, Redwood City |
From ClinicalTrials.gov, data retrieved Oct 2, 2026. Each study sets its own eligibility; the study team decides who can join.