A systematic review into the potential health effects from radio wave exposure has shown mobile phones are not linked to brain cancer. The review was commissioned by the World Health Organization and is published today in the journal Environment International. Mobile phones are often held against the head during use. And they emit radio waves, a type of non-ionising radiation. These two factors are largely why the idea mobile phones might cause brain cancer emerged in the first place. The possibility that mobile phones might cause cancer has been a long-standing concern. Mobile phones – and wireless tech more broadly…