A Washington man talking on his cellphone may be taking a health risk, according to an analysis from the World Health Organization that finds a possible risk of cancer from exposure to the devices. Nicholas Kamm/AFP/Getty Images hide caption

itoggle caption Nicholas Kamm/AFP/Getty Images

A study finds that drinking at least six cups a day of coffee reduces the risk of aggressive prostate cancer by 60 percent. Francois Guillot/AFP/Getty Images hide caption

itoggle caption Francois Guillot/AFP/Getty Images

A doctor views CT scans in the emergency room at Coney Island Hospital in New York. Mario Tama/Getty Images hide caption

itoggle caption Mario Tama/Getty Images

Japanese Buddhist monk Tanaka Tokuun, who was evacuated from Fukushima prefecture, looks over an instrument measuring radiation levels at a hotel on March 17. Buddhika Weerasinghe/Getty Images hide caption

itoggle caption Buddhika Weerasinghe/Getty Images

A boy evacuated from Koriyama, some 37 miles from the Fukushima Dai-ichi plant, gets scanned with a Geiger counter Wednesday. Ken Shimizu/AFP/Getty Images hide caption

itoggle caption Ken Shimizu/AFP/Getty Images