Cell Phones May Cause Brain Cancer, WHO Experts Say

indicate it is a possible, not a probable source," he said. "But they still cannot come out with a positive conclusion."

Elsayyad advises using an ear piece or speaker when talking on a cell phone.

"If you hold the phone away from your brain that ought to decrease the risk tremendously," he said.

More information

To learn more about brain cancer, visit the U.S. National Library of Medicine.

SOURCES: Nagy Elsayyad, M.D., assistant professor, Department of Radiation Oncology, University of Miami Sylvester Cancer Center and Miller School of Medicine; Otis Brawley, M.D., chief medical officer for the American Cancer Society; World Health Organization, news release, May 31, 2011; CTIA-The Wireless Association, news release, May 31, 2011; CNNCopyright