User's Manual

results that often cannot be repeated
in other laboratories. A few animal
studies, however, have suggested
that low levels of RF could accel-
erate 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 can-
cer-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 neu-roma, 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