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suggested that low levels
of RF could accelerate the
development of cancer in
laboratory animals. However,
many of the studies that
showed increased tumor
development used animals
that had been genetically
engineered or treated with
cancer causing chemicals so as
to be predisposed 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
existence of any harmful health
effects from wireless phone RF
exposures.
However, none of the studies
can answer questions about
longterm 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
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