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Safety
3. What kinds of phones are the
subject of this update?
The term “wireless phone”
refers here to handheld wireless
phones with built-in antennas,
often called “cell”, “mobile”, or
“PCS” phones. These types of
wireless phones can expose the
user to measurable
radiofrequency energy (RF)
because of the short distance
between the phone and the
user’s head. These RF exposures
are limited by FCC safety
guidelines that were developed
with the advice of the FDA and
other federal health and 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
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