Okay, then what does this say about people who have cochlear implants? What does this say about all the other radiation fields that constantly surround us in the modern world?
There is actually a pretty easy answer to this problem: Everyone who is concerned about brain tumors and such from cell phone (and other forms of) radiation can simply construct a protective shield out of aluminum foil and wear it like a helmet or a hat. After all, lots of communication cables are similarly shielded for similar reasons.
There.
Problem solved.
Plus new fashion trend for the overly concerned.