Motorola StarTAC 3000 User Manual page 101

Two other studies of interest have been reported
recently in the literature:
1 Two groups of 18 people were exposed to
simulated mobile phone signals under laboratory
conditions while they performed cognitive
function tests. There were no changes in the
subjects' ability to recall words, numbers, or
pictures, or in their spatial memory, but they
were able to make choices more quickly in one
visual test when they were exposed to simulated
mobile phone signals. This was the only change
noted among more than 20 variables compared.
2 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.
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
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