Safety Guidelines
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.
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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