Motorola A388 User Manual page 132

Digital wireless telephone
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signals. This was the only change noted among more than 20
variables compared.(3)
In a study of 209 brain tumor cases and 425 matched controls,
there was no increased risk of brain tumors associated with
mobile phone use. When tumors did exist in certain locations,
however, they were more likely to be on the side of the head
where the mobile phone was used. Because this occurred in only
a small number of cases, the increased likelihood was too small
to be statistically significant.(4)
In summary, we do not have enough information at this point to
assure the public that there are, or are not, any low incident
health problems associated with use of mobile phones. FDA
continues to work with all parties, including other federal
agencies and industry, to assure that research is undertaken to
provide the necessary answers to the outstanding questions
about the safety of mobile phones.
What is known about cases of human cancer that
have been reported in users of hand-held mobile
phones?
Some people who have used mobile phones have been
diagnosed with brain cancer. But it is important to understand
that this type of cancer also occurs among people who have not
used mobile phones. In fact, brain cancer occurs in the U.S.
population at a rate of about 6 new cases per 100,000 people
each year. At that rate, assuming 80 million users of mobile
phones (a number increasing at a rate of about 1 million per
month), about 4800 cases of brain cancer would be expected
each year among those 80 million people, whether or not they
used their phones. Thus it is not possible to tell whether any
individual's cancer arose because of the phone, or whether it
would have happened anyway. A key question is whether the risk
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