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exposures that people get from these base
stations are typically thousands of times lower
than those they can get from wireless phones.
Base stations are thus not the primary subject of
the safety questions discussed in this document.
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 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.
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