I don't think we'll ever see the end of this debate. Do cell phones emit enough radiation to contribute to brain tumors and cancer? Specifically, people are concerned about glioblastoma. Mobile phone companies and carriers will probably do everything to convince the world that the answer is "no." Activist groups and cancer patients will do everything to convince the world the answer is "yes." Meanwhile, we as health care professionals will probably shrug our shoulders and say, "we really don't know."
The Interphone study overseen by the World Health Organization may be one of the largest studies evaluating the association between cell phone use and brain tumors. Here's a quote from The Daily Telegraph :
A preliminary breakdown of the results found a “significantly increased risk” of some brain tumours “related to use of mobile phones for a period of 10 years or more” in some studies.Now, keep in mind that phones have evolved dramatically and that older analog phones emitted higher levels of compared to modern digital phones (although smartphones and high bandwidth data plans are a different story).
To get a preview of some of the results from this study, click here.