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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 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 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
5
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 phones 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.
What research is needed to decide whether
RF exposure from wireless phones poses a
health risk?
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