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ed at greater distances from the user, the exposure to
RF is drastically lower because a person's RF exposure
decreases rapidly with increasing 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 pro-
duce 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 investigat-
ing the effects of radiofrequency energy (RF) exposures
characteristic of wireless phones have yielded conflict-
ing results that often cannot be repeated in other labo-
ratories.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 ca ncer 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
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