UVR Exposure From Tanning Beds Ups Cerebral Blood Flow

Frequent exposure to UV radiation may reward central nervous system, encourage over tanning

MONDAY, Aug. 15 (HealthDay News) -- Exposure to ultraviolet radiation (UVR) during use of a tanning bed increases regional cerebral blood flow (rCBF) in the dorsal striatum, anterior insula, and medial orbitofrontal cortex, according to a study published online April 11 in Addiction Biology.

Cynthia R. Harrington, M.D., from the University of Texas Southwestern Medical Center in Dallas, and colleagues evaluated the effects of a commercially available tanning bed upon rCBF, a measure of brain activity, using single-photon emission computed tomography. A total of seven frequent salon bed tanners underwent two sessions under a UVA/UVB tanning light: one with UVR and one with filtered UVR (sham UVR). Subjects were blinded to the study order and the session order was randomized.

The investigators found that subjects had a relative increase in rCBF of the dorsal striatum, anterior insula, and medial orbitofrontal cortex, during the UVR session as compared to the sham UVR session. A decrease in the subjective desire to tan accompanied these changes.

"These findings reveal that UVR exposure via a commercially available tanning bed, relative to sham UVR, increases mesostriatal activity in frequent tanners," the authors write. "These findings strongly suggest that frequent tanning may involve CNS reward and/or reinforcement over and above the oft-stated goal of 'getting tan'".

Abstract
Full Text (subscription or payment may be required)

Copyright © 2011 HealthDay. All rights reserved.

Powered by

jQuery UI Accordion - Default functionality

For life-long learning and continuing professional development, come to Lippincott's NursingCenter.

Nursing Jobs Plus
Featured Jobs
Recommended CE Articles Recommended Nursing Articles Evidence Based Practice Skin Care Network NursingCenter Quick Links What’s Trending Events