WHO: Cell phone use may increase cancer risk

(CNN) -- Radiation from cell phones can possibly cause cancer, according to the World Health Organization. The agency now lists mobile phone use in the same "carcinogenic hazard" category as lead, engine exhaust and chloroform.

Before its announcement Tuesday, WHO had assured consumers that no adverse health effects had been established.

A team of 31 scientists from 14 countries, including the United States, made the decision after reviewing peer-reviewed studies on cell phone safety. The team found enough evidence to categorize personal exposure as "possibly carcinogenic to humans."

What that means is that right now there haven't been enough long-term studies conducted to make a clear conclusion if radiation from cell phones are safe, but there is enough data showing a possible connection that consumers should be alerted.

Manufacturers of many popular cell phones already warn consumers to keep their device away from their body.