UVB Light and Sunscreen
Completed · Phase 4
Conditions studied: Vitamin D Status
In brief
Patients need vitamin D which is normally produced in the skin in response to ultraviolet light from the sun. Vitamin D is important for calcium absorption and good bone health. Physicians have been using sunscreens to protect patients from skin cancer and the aging effects of sunlight for a least a half a century. Dermatologists have promoted sunscreen use to restrict sunlight exposure especially in white Caucasians. If this behavior is done 100% of the time when outdoors individuals may suffer from vitamin D deficiency. It is impossible to influence persons' behavior to wear sunscreens all the time when outdoors. With the use of sunless tanning agent (DHA), once a week, we can obtain a continuous sunscreen in the top layer of the skin that will not wash off, can't be removed with soap and water, or removed by perspiration. Under these circumstances we can answer the scientific question, will sunscreen use inhibit the production of vitamin D in the skin?
Key facts
- Study ID
- NCT00818467
- Run by
- Creighton University
- People needed
- 50
- Starts
- 2008-05-01
- Expected to finish
- 2009-02-01
- Last updated by the study team
- 2009-12-01
Who can join
Age: 19 and older, up to 50. Sex: any. Healthy volunteers: accepted.
You may qualify if…
- males or females
- ages 19-50 with less than 16 oz milk per day
- less than 10 hours of sun per week
- no Vitamin D supplements
- no anticonvulsants
- no barbiturates
- no steroids
- no meds that increase photosensitivity
- no granulomatous disease
- no liver or kidney disease
- no history of skin cancer
- BMI less than 30
- skin types I \& II
You may not qualify if…
- None
Where it is running
- Creighton University — Omaha, Nebraska, United States
Full record on ClinicalTrials.gov
Trial information comes from ClinicalTrials.gov and is refreshed daily. TrialsForMe does not provide medical care and does not run the studies it lists.