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what is cell phone radiation
is cell phone radiation
dangerous ?
cell phone and brain cancer
report
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Cell
Phone Radiation Report
The hearing was
chaired by Rep. Denis Kucinich of Ohio, and much of the discussion
revolved around whether there are significant links between cell
phone use and brain cancer.
Dr Ronald Herberman, director of the University of Pittsburgh Cancer
Institute, said he could not tell the subcommittee members that cell
phones were dangerous, but neither could he assure them they were
safe.
Dr. David Carpenter, director of Institute for Health and the
Environment at University of Albany, said some studies have shown
links between long term cell phone use and brain cancer.
Both men talked about a recent Swedish study by Dr Lennart Hardell
of Orebro University that is supposed to have found that long term
cell phone use doubles the risk of malignant brain tumors and
acoustic neromas (where the tissue of the hearing nerve develops
tumors). Lennart and colleagues said young people were even more
likely to develop brain cancer from cell phone use, up to five times
higher risk for people under 20.
However, Lennart's study has not yet appeared in a peer-reviewed
journal, and until it does, it will not be treated as proper
science. This was the sentiment expressed by another witness, Dr
Robert Hoover, director or Epidemiology and Biostatistics Program at
the National Cancer Institute, who said there was not enough
research from which to draw firm conclusions one way or another and
more should be done.
"Larger studies are needed to sort out chance and bias", said
Hoover, according to a report by CNN.
While some studies have suggested there is a higher risk of brain
tumor occurring on the side of the head the cell phone is most often
pressed to, others have not found this, said Hoover. Also, a series
of studies called Interphone which were done in different countries
did not find an increased risk of tumors from the first ten years of
cell phone use, he added.
A representative from the International Association for Wireless
Telecommunications declined to attend the hearing, but the CEO of
the Association issued a statement the day before that said leading
experts from well known global health organizations predominantly
agree there is no reason for concern based on the evidence
available.
Carpenter tended to support this statement, saying that based on a
well known statistical standard, the 95 per cent confidence level
(that is the result of the study is likely to be the same 95 times
out of every 100 repetitions) research that says there is a link
between cell phone use and brain cancer does not stand up.
But Carpenter also said there is very little US-funded research in
this area and suggested "Are we at the same place we were with
smoking and lung cancer 30 years ago?"
Absence of evidence is not evidence of absence, is an important rule
to remember in scientific investigation.
If there is a risk, then it is greater for children than for adults,
both Carpenter and Herberman agreed with this, and explained that
the electromagnetic radiation from cell phones is able to penetrate
much further into the brain of a child compared to that of an adult.
However, one might expect to see some changes in the incidence of
brain cancer in children if there was a higher risk, and there has
been no significant increase from 1980 to 2005 said Hoover.
Mrs Ellie Marks told the hearing that her husband used his cell
phone against his ear for about 30 hours a month. He developed a
tumor on the same of his head. She said she believed the tumor was
caused by the cell phone, and wishes she had thrown it "in the
garbage" as she had threatened to do so.
In July this year, Herberman sent a memo to all the staff at his
faculty urging them to limit their use of cell phones, and to limit
their children's use especially. He said at the time that it was
important to err on the safe side, rather than wait for a definitive
study linking cell phone use with cancer. He said that other
countries like France and Germany had already issued recommendations
to limit exposure to electromagnetic fields.
Source: CNN, Committee on Oversight and Government Reform.
Written by: Catharine Paddock, PhD |
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