Study: Tanning beds definitely cause cancer

International cancer experts have moved tanning beds and ultraviolet radiation into the top cancer risk category deeming both to be definite causes of cancer. For years, scientists have described tanning beds and ultraviolet radiation as "probable carcinogens." A new analysis of about 20 studies concludes the risk of skin cancer jumps by 75 percent when people start using tanning beds before age 30. Experts also found that all types of ultraviolet radiation caused worrying mutations in mice, proof the radiation is carcinogenic. Previously, only one type of ultraviolet radiation was thought to be lethal.