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Rage IO
November 2. 2011
No Cancer Link to Cellphones Found
Devices are
probably safe,
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Ilx Portland Observer
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ails
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(AP) — Danish researchers
can offer some reassurance if
you're concerned about your
cellphone: Don't worry. Your
device is probably safe.
The biggest study ever to
examine the possible connec
tion between cellphones and
cancer found no evidence of
any link, suggesting that bil
lions of people who are rarely
more than a few inches from
their phones have no special
health concerns.
The Danish study of more
than 350,000 people concluded
there was no difference in can
cer rates between people who
had used a cellphone for about A cellphone call from a New York subway platform gives Mory Bailo Aw some last minute directions
to a friend’s house.
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a decade and those who did not.
Last year, a separate large
study found no clear connec
tion between cellphones and
cancer. But it showed a hint of
a possible association between
very heavy phone use and
glioma, a rare but often deadly
form of brain tumor. However,
the numbers of heavy users was
not sufficient to make the case.
T hat study o f m ore than
14,000 people in multiple coun
tries, in addition to animal ex
periments, led the International
Agency for Research on Can
cer to classify electromagnetic
energy from cellphones as "pos
sibly carcinogenic," adding it to
a list that also includes things
such as coffee and gasoline
engine exhaust.
But that designation does not
mean the phones necessarily
pose a risk. Cellphones do not
emit the same kind of radiation
as that used in some medical
tests or found in other sources
such as radon in soil.
Two U.S. agencies — the
Food and Drug Administration
and the Federal Com m unica
tions Commission — have found
no evidence that cellphones are
linked to cancer.
Yet fears of a link persist,
despite the fact that cancer rates
have not risen since cellphones
were introduced.
In the latest research, pub
lished online in the journal BMJ,
researchers updated a previous
study e x a m in in g 3 5 8 ,4 0 3
cellphone users aged 30 and
over in Denmark from 1990 to
2007. They found cellphone
users did not have a higher can
cer risk compared with those
without cellphones.
Cancer rates in people who
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il,e jJortlanit (Dbsemer
used cellphones for about 10
years were similar to rates in
people w ithout a cellphone.
Cellphone users were also no
more likely to get a tumor in the
part of the brain closest to where
phones are usually held against
the head. The study was paid
for by the government's Danish
Strategic Research Council.
"Our study provides little evi
dence for a causal association,
but we cannot rule out a small
to moderate increase in risk for
subgroups of heavy users," said
Patrizia Frei, of the Institute of
C a n ce r E p id e m io lo g y in
Copenhagen, Denmark, one of
the paper's authors.
"This is encouraging news,
but it doesn't mean we're at the
end of the road," said Hazel
Nunn, head of Health Evidence
and Information at Cancer Re
search U.K., which was not
linked to the study.
About three-quarters of the
world's population, more than 5
billion people, use a cellphone.
That makes it difficult for sci
entists to compare cancer inci
dence in people who use the
devices versus those who do
not.
Others disputed the Danish
study's findings. The advocacy
group MobileWise, which be
lieves cellphones pose a health
risk, said the study wasn't long
enough to consider the long
term risk, since brain tumors
can take decades to develop.