In the case of mobile phones half of impressions
2006/03/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria
At the University of Nottingham they conducted a study on the relationship between brain tumors and the use of mobile phones. Research has lasted four years and it seems that mobile use does not increase the risk of brain tumor.
Although other studies have concluded that mobile phones have a negative effect, according to this study there is no relationship between tumor presence and mobile use (since when the mobile is used, depending on the number of times it has been used and the total time used).
Researchers have focused mainly on those who have used mobile for a long time, since those initial phones used analog signals and emitted more energy. However, users of analog mobiles have no higher risk of developing tumors in the brain.
However, the authors consider that more studies are necessary.