Actually, no. The cellphone itself has to talk to the cell tower, which might be several kilometers away; the BlueTooth device only has to communicate over a range of a couple of meters. Even with 24/7 exposure, you'd need aeons to have detectable effects. The risk is somewhere up there with being eaten by Martians.
Of course, the real answer to people who worry about the radiation from their cellphones is to use a wired hands-free kit. If you have the cellphone at arm's length instead of right next to your skull, the radiation risk goes from negligible to super-duper-extra-negligible. Seriously, it's trivial to reduce the cellphone radiation strength reaching your brain a millionfold or more -- not that the risk at full strength is anything to worry about to begin with.
Linc Madison * San Francisco, California * Telecom at Linc Mad d0t c0m URL: <