Clinical Trials Logo
  1. Home
  2. Vitamin D Status
  3. NCT00818467

UVB Light and Sunscreen — Sunscreen  

Vitamin D Status Clinical Trial

Official title:
3% Dihydroxyacetone (DHA or Sunless Tanning Agent) Inhibits Vitamin D Production in the Skin in Response to Ultraviolet Light

Clinical Trial Summary

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?

Clinical Trial Description

n/a

Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Treatment

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT00818467
Study type Interventional
Source Creighton University
Contact
Status Completed
Phase Phase 4
Start date May 2008
Completion date February 2009
View Details
See also
  Status Clinical Trial Phase
Completed NCT02822651 - Hypovitaminosis D Prediction Score N/A
Completed NCT01825616 - Vitamin D2, Muscle Damage, NASCAR Pitcrew N/A
Completed NCT01101243 - Maintenance of Vitamin D Level by UVB Radiation N/A
Completed NCT00650780 - Vitamin D Binding Protein (Gc) Allele Variation Effects Response to Vitamin D Treatment N/A
Active, not recruiting NCT01798030 - Vitamin D Retrospective Study and Role With Disease
Completed NCT00864539 - Comparison of the Efficacy of Calcium-cholecalciferol Foodstuffs and Calcium-cholecalciferol Supplement Phase 2/Phase 3
Suspended NCT04399291 - Vitamin D Status and Bone Health of Older Adults in Care Facilities
Completed NCT05931705 - Vit D Receptor Gene Polymorphism
Recruiting NCT03132103 - Vitamin D Supplementation and Immunity/Physical Performance N/A
Completed NCT01723852 - Vitamin D Intervention in Infants N/A
Completed NCT01042197 - The Relation Between Vitamin D Production and UVB Exposed Body Surface Area N/A
Completed NCT01074541 - The Vitamin D Dose-Response Relationship N/A
Completed NCT02858882 - Vitamin D Status and Muscle Function N/A
Completed NCT02474446 - Getting Vitamin D Dosing Right N/A
Recruiting NCT06241976 - Diabetes Risk in East London and Its Association With Vitamin D by Ethnic Group (DELVE) N/A
Completed NCT02608164 - A Comparison of Capsules and Oral Spray Solution as Methods of Delivering Vitamin D3 and Raising Status N/A
Completed NCT02860663 - Effect of Different Vitamin D Vitamers on Vitamin D Status N/A
Completed NCT01348594 - The Impact of Vitamin D Status on in Vitro Fertilization (IVF) Outcomes N/A