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4. What are the results of the research done
already?
The research done thus far has produced
conflicting results, and many studies have
suffered from flaws in their research methods.
Animal experiments investigating the effects
of Radio Frequency (RF) energy exposures
characteristic of wireless phones have yielded
conflicting 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 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
do not 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,