Apply now to guide this site
Discuss in our forum
From Heather Brannon, MD, former About.com Guide
Updated July 03, 2008
About.com Health's Disease and Condition content is reviewed by the Medical Review Board
The sun gives off energy that we call "ultraviolet radiation," because it has a shorter wavelength than visible blue or violet light. UV radiation is known to cause skin cancer and photoaging.
All About UV Radiation
©2013 About.com. All rights reserved.