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Carotenoids in the Skin and Immune Aging

Stanford University · NCT07221643

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Opens the official ClinicalTrials.gov record, with the study team’s contacts. Bored Studies doesn’t enroll anyone.

Key facts

Compensation
Not posted. Ask the study team before screening.
Who can join
Ages 18+ · All sexes
Healthy volunteers
Accepted
Study type
Observational
Target enrollment
40
US sites recruiting
1
Study start
October 9, 2025
Record last updated
December 15, 2025

Status re-checked against ClinicalTrials.gov within the last 12 hours.

What the study is about

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

Conditions: No Condition; Skin Carotenoids and Immune-aging

Eligibility criteria

Copied from the official record. The study team makes the final decision at screening.

Show full 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

Recruiting US locations

  • Stanford Health - General Dermatology Clinic

    Redwood City, CA 94063

    Site contact: Anne Lynn S. Chang, MD

Study contacts (from the official record)

  • Xiaochen Zhong, BA · 408-816-0111 · xczhong@stanford.edu
  • Po-Han Ho, MD · pohanho@stanford.edu
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Carotenoids in the Skin and Immune Aging (NCT07221643) | Bored Studies