http://www.smh.com.au/news/technolog...217500080.html
Scientists warn of mobile phone cancer risk
Scientists today warned US legislators of the risks of brain cancer from
mobile phone use, highlighting the potential risk for children who use them.
"We urgently need more research," said David Carpenter, director of the
Institute of Health and Environment at the University of Albany, in
testimony before the House Subcommittee on Domestic Policy.
"We must not repeat the situation we had with the relationship between
smoking and lung cancer," Carpenter said.
Ronald Herberman, director of the University of Pittsburgh Cancer
Institute, said that most studies "claiming that there is no link
between mobile phones and brain tumours are outdated, had methodological
concerns and did not include sufficient numbers of long-term mobile
phone users."
Many studies denying a link "defined regular cell (mobile) phones as
'once a week,"' added Herberman.
"I cannot tell this committee that cell phones are definitely dangerous.
But, I certainly cannot tell you that they are safe," he said.
Carpenter and Herberman both told the committee the brain cancer risk
from mobile phone use is far greater for children than for adults.
Herberman held up a model for politicians showing how radiation from a
mobile phone penetrates far deeper into the brain of a 5-year-old than
that of an adult.
"Every child is using cell phones all of the time, and there are three
billion cell phone users in the world," said Herberman.
He added that, like the messages that warn of health risks on cigarette
packs, mobile phones "need a precautionary message."
Noting that numerous US studies have not found a definitive cancer-phone
link, Carpenter asked: "Are we at the same place we were with smoking
and lung cancer 30 years ago?"
The committee were shown several European studies, particularly surveys
from Scandinavia - where the mobile phone was first developed - which
show that the radiation emitted by mobile phones have definite
biological consequences.
For example, a 2008 study by Swedish cancer specialist Lennart Hardell
found that frequent mobile phone users are twice as likely to develop a
benign tumour on the auditory nerves of the ear most used with the
handset, compared to the other ear.
In addition, a paper published this month by the Royal Society in London
found that adolescents who start using mobile phones before the age of
20 were five times more likely to develop brain cancer at the age of 29
than those who didn't use a mobile phone.