Observational Study on Skin Carotenoids and Immune Aging

This observational study is looking at the connection between the levels of carotenoids (natural pigments found in plants that can be stored in your skin) and how your immune system ages. Researchers want to see if there's a link between how much carotenoid is in your skin and different aspects of immune health. They will measure your skin carotenoid levels and features of skin aging. You might be able to join if you are a healthy individual between 18-30 years old or 65 years and older, with any skin type. People who are pregnant or breastfeeding, or have uncontrolled medical conditions, cannot participate. The study is currently unclear on its recruitment status and plans to enroll 40 participants.

Study design
This is an observational study, meaning researchers will observe and collect information without providing any specific intervention. It plans to include 40 participants.
What's involved
Your skin carotenoid levels and skin aging features will be measured at one day.
Compensation
Not stated in the trial record.
Follow-up
Not specified.

AI-generated from the public study record. Only the study team can confirm whether you're eligible — confirm details with them before making decisions.

NCT07221643

Carotenoids in the Skin and Immune Aging

Recruiting
Not specifiedAges 18+Observational
Stanford University
~40 participants
Updated 2025-12-15 on ClinicalTrials.gov

At a glance

Recruiting sites
1 of 1 listed site is recruiting right now
RecruitingSuspended, closed, or not yet open
What they're measuring
Skin carotenoid levels and skin aging features
Measured over one day
No Condition
Skin Carotenoids and Immune-aging
1 sites across 1 states
California1

Opens a ready-to-send draft in your own email app — review before sending.

Do you actually qualify for this trial?

Add a private profile and we'll compare every criterion below against your situation — and tell you which ones are met, uncertain, or excluding.

Check eligibility for this trial ~2 min · HIPAA-protected · delete anytime
Eligibility criteria

Inclusion

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

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
  • Skin carotenoid levels and skin aging featuresone day

    We will assess the skin carotenoid levels' correlation with skin aging features, such as wrinkles, fine lines, and age spots.