In his capacity as Cancer Institute Director at the University of Pittsburg, Dr. Robert Herberman, issued an unequivocal warning to his staff and faculty to limit their cell phone use because of increased risk of brain cancer. He also cautioned that cellphones should be kept away from head and raised a particular concern about the use by children, citing a study which followed students in Sweden and used them for 10yrs or more. For that group there was a 5-fold increase in risk for those with brain tumours compared to those who didn’t use them. In this CBS interview Dr Devra Davis explains further.
https://www.youtube.com/watch?v=iXcNa3btZac&x-yt-cl=84838260&x-yt-ts=1422327029
https://www.youtube.com/watch?v=iXcNa3btZac&x-yt-cl=84838260&x-yt-ts=1422327029