Dear All, Please excuse my ignorance of physics. According to some Russian research 1 mW of microwave radiation could be considered safe for the brain (ie. it won't cause brain damage). I therefore considered that if a 1 W cellphone is damaging to the brain then perhaps it's a good idea to use a 1 mW Bluetooth earphone (which has a range of 1 m) and carry the cellphone on a waist belt. My question is - how much microwave radiation will reach the brain anyway from the waist-carried cellphone ? In other words if the cellphone is giving out 1 W of microwaves - then how much (roughly) less will reach the brain if the cellphone is 50 cm away compared with only 1 cm ? I look forward to your answers. Many thanks.