Could heavy cellphone users be more likely to suffer brain cancer? Scientists and researchers aren’t sure, but they’re locked in debate. Results of a study published by Scandinavian researchers in the Journal of the National Cancer Institute on Thursday indicated there doesn’t seem to be any such link between cellphones and the incidence of brain tumors. However, the World Health Organization insists there may in fact be such a link. The Scandinavian study looked at the incidence of glioma and meningioma.