With any type of wireless, including Wi-Fi (2.4GHz, 5GHz), and cell phones (700-800MHz, 1.8-2GHz frequency bands) reception does not harm you, it is only transmission that may possibly be bad. Different transmitters (phones) have different power levels when transmitting, but, according to the FCC they all have to transmit at less than 30dBm / 1 Watt. For comparison, a microwave oven transmits at 800-1000 Watts in a similar frequency band.
Studies about the harm of such low-power transmitters have been inconclusive, however, either way the danger is reduced by distance considerably (square/logaritmic scale). If you are worried about dangerous effects, just use a bluetooth or speakerphone, every inch that you separate your brain/organs from the headset reduces the dangers a lot (think of something like twice per inch). Also most of the possible danger is while actively transmitting.
Bookmarks