LG 285 Manual page 80

Safety
used animals that had been
genetically engineered or
treated with cancer-causing
chemicals so as to be pre-
disposed to develop cancer in
the absence of RF exposure.
Other studies exposed the
animals to RF for up to 22 hours
per day. These conditions are
not similar to the conditions
under which people use wireless
phones, so we don't know with
certainty what the results of
such studies mean for human
health. Three large epidemiology
studies have been published
since December 2000. Between
them, the studies investigated
any possible association
between the use of wireless
phones and primary brain
cancer, glioma, meningioma, or
acoustic neuroma, tumors of the
brain or salivary gland, leukemia,
or other cancers. None of the
studies demonstrated the
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existence of any harmful health
effects from wireless phone RF
exposures. However, none of the
studies can answer questions
about long-term exposures,
since the average period of
phone use in these studies was
around three years.
5. What research is needed to
decide whether RF exposure
from wireless phones poses a
health risk?
A combination of laboratory
studies and epidemiological
studies of people actually using
wireless phones would provide
some of the data that are
needed. Lifetime animal
exposure studies could be
completed in a few years.
However, very large numbers of
animals would be needed to
provide reliable proof of a
cancer promoting effect if one
exists. Epidemiological studies
can provide data that is directly