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safety agencies. When the
phone is located 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 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 predisposed 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
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