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results that often cannot
be repeated in other
laboratories. A few animal
studies, however, have
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.
Guidelines for safe and effi cient use