People who started using mobile as teenagers and have been doing so for more than a decade are at a five-fold risk of developing a common type of brain cancer, new evidence indicates. The Swedish study found large increased incidence of astrocytoma, the most common form of a malignant brain tumour type called glioma, in those who had been using mobiles for over 10 years. The research, published in the International Journal of Oncology, was further evidence of the need to educate children of the potential dangers of talking on mobile phones. Researchers ... examined the mobile and cordless phone use of more than 1,200 Swedes, who were diagnosed with malignant brain cancer between 1997 and 2003. They then compared [their phone habits] to phone use information on almost 2,500 'controls'. The team concluded that using both mobiles and cordless phones led to "an increased risk for malignant brain tumours". People who started using mobiles as teenagers, and have done so for at least 10 years, were 4.9 times more likely to develop astrocytoma, compared to controls. Worringly, the comparable figure for cordless home phones - which are very similar to mobiles in terms of radiation emission - was almost as high, at 3.9. The study comes weeks after the International Agency for Research on Cancer, part of the World Health Organisation, stated that radiation from handsets was "possibly carcinogenic", although it stopped short of declaring there was a clear link. Air-tubes, such as the Air2Hear, cut radiation exposure to the brain to almost zero by replacing the last six inches of wire with a hollow tube down.

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