Research finds mobile phone cancer threat ALAN MacDERMID The Herald, 5 September, 2001 USING mobile phones more than doubles the risk of developing brain tumours over 10 years, according to new research. The evidence emerged from Sweden yesterday as the UK government's senior adviser on mobile phones called for the cost of calls to be raised to discourage over-use by children. Sir William Stewart, president of the Royal Society of Edinburgh, also attacked recent "irresponsible" marketing of mobile phones as a back-to-school accessory when he addressed the British Association's science festival at Glasgow University. The study by Lennart Hardell, Professor of Oncology at Obrero University in Sweden, is one of the most authoritative and damning on the subject to date. He compared the fate of 1617 patients diagnosed with brain tumours since 1997 with a control group of healthy subjects. Those who had used mobile telephones over a 10-year-period were two-and-a-half times more likely to have a brain tumour on the temporal area of the brain on the side where they had held the handset. The incidence of cancer of the auditory nerve, connecting the ear to the brain, was trebled. The research, not yet published, was based on use of analogue phones, but Professor Hardell said yesterday that digital phones could be worse, since they used pulsed microwaves and could boost their power 500-fold while dialling up. He added: "It is too early to give advice on GSM digital phones. We will have to wait until about 2005 before we can see the effect of digital phones. Until then we would use the precautionary approach recommended by the Stewart report." Earlier, Sir William, told the science festival: "Children's skulls are not fully developed. They are not thickened and they will be using the phones for longer." He said the available evidence was that radiation from phones did not represent a direct risk to the public, but there were still biological effects. "We do not have evidence on what the long-term effects might be." Alasdair Philips, of the campaign group Powerwatch, told the science festival that a survey they carried out showed that 85% of children aged 10 to 15 had mobile phones, and 10% used them for more than 45 minutes a day. The phones were at their most powerful when they were dialling and searching for a base station, and he recommended using a hands-free kit or waiting until the number was connected before putting the phone up to your ear. He said 80% of the output of a phone went into the user's head, but this was reduced to three per cent with a hands-free kit. However, if a hands-free kit was used while the phone was clipped to the user's belt this only led to the emissions reaching the kidneys. He said the next generation of phones would require less powerful masts but more of them, which he regarded as an improvement. However, he said it was completely unethical for phone companies to provide contracts which would give children as much as 600 free minutes a month, which they would be sure to use up. Full article at: http://www.theherald.co.uk/news/archive/5-9-19101-0-23-25.html Michael Keaney Mercuria Business School Martinlaaksontie 36 01620 Vantaa Finland [EMAIL PROTECTED]