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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 radiofrequency
energy (RF) 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 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
long-term exposures, since the
average period of phone use in
these studies was around three
years.
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