Vitamin D Production Levels Achieved by Sunbed Tanning

Not Applicable

Completed

• Conditions: Healthy
• Interventions: Radiation: Sunbed tanning

• Registration Number: NCT02334592
• Lead Sponsor: Vitamin D Society

Brief Summary

Health Canada's Radiation Emitting Devices (RED) Act provides exposure time guidelines for sunbed use. These guidelines are intended to protect sunbed users from overexposure to UV radiation. Overexposure is defined as "exposure that exceeds the amount needed for vitamin D production and could lead to skin or eye damage. Acute overexposure induces sunburn." However, the effect of the recommended time exposure schedule on serum 25(OH)D response has not been characterized. Further, it is unknown if the maximum time exposures are required to reach and/or maintain optimal 25(OH)D levels. The aim of the current study is to characterize serum 25(OH)D response to regular sunbed use following the time exposure schedule recommended by Health Canada.

Detailed Description

Not available

Study Timeline

• Status Verified: 2013-12
• Study Start: 2014-01
• Primary Completion: 2014-05
• Study Completion: 2014-05
• Study First Submitted: 2015-01-06
• Study First Submitted QC: 2015-01-07
• Last Update Submitted: 2015-01-07
• Study First Posted: 2015-01-08
• Last Update Posted: 2015-01-08

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 87

Inclusion Criteria

• 18 years and older, male or female

Exclusion Criteria

• History of skin cancer, granulomatous disease, liver disease, or kidney disease
• Photosensitive medications
• Pregnancy
• Vitamin D supplementation within last 60 days
• Sunbed use within last 60 days
• Planned travel to sunny destination during study period (January to April 2014)

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Low Pressure 160W sunbed	Sunbed tanning	-
Low Pressure 100W sunbed	Sunbed tanning	-
High Pressure sunbed	Sunbed tanning	-

Primary Outcome Measures

Name	Time	Method
To characterize serum 25(OH)D response to regular sunbed use, when performed according to the RED Act exposure time guidelines	12 weeks

Secondary Outcome Measures

Name	Time	Method
To characterize serum 25(OH)D response with respect to sunbed lamp output (100W, 160W and High Pressure).	12 weeks
To characterize serum 25(OH)D level with respect to skin lightness.	12 weeks