Excessive mobile telephone usage has been blamed as a possible risk factor for intracranial tumors (brain cancer: glioma, meningioma). The Radiofrequency Electro-Magnetic Fields (RF EMF) emitted by cellphones has long been given the short end of the stick. Whether it's a way to curb your teenager's excessive minutes or an excuse to leave your cellphone in the car while you're getting a massage, you probably accept the commonly-held belief that excessive cellphone usage simply can't be healthy.
Two widely published studies point us in the opposite direction, however: In one, a german university carried out case-control studies of low level RF EMF exposure from cordless phone docking stations and cellphones kept charging during the night near participant's beds and found a decreased association of glioma and meningioma by 18% compared to controls. Another study (published recently by a conglomeration of 5 European countries) found that high cellphone use had a protective effect, rather than a risk. (The study of 1209 meningioma cases and 3299 population-based controls found a decreased risk of meningioma among regular users of mobile phones, lower than those who had never, or were irregular users ...
So, talk all you want!
