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34
Safety
distance from the source. The so called “cordless
phones,” which have a base unit connected
to the telephone wiring in a house, typically
operate at far lower power levels, and thus
produce RF exposures far below the FCC safety
limits.
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
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