Long-term mobile phone use could increase the risk of developing cancer, according to a decade-long landmark study.
The investigation by the World Health Organisation analysed studies of 12,800 people in 13 countries.
It found people who used mobiles for a decade or more had a 'significantly increased risk' of developing some types of brain tumours. Six of the eight Interphone studies found an increased risk of glioma - the most common brain tumour - among mobile phone users, according to The Daily Telegraph.
The head of the WHO study, Dr Elisabeth Cardis, said the report would recommend young children should have restricted access to mobile phones. She said it will also include a 'public health message.' Dr Cardis added that although the study was not definitive, precautions were important.
Some critics said the report may have underplayed the results because it did not study any children. They pointed out that the Interphone investigation was also partly funded by the mobile phone industry.