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| User Guide
For Your Safety
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 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 applicable
to human populations,
but ten or more years
follow-up may be
needed to provide
answers about some
health effects, such as