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expose the user to measurable radio frequency energy
(RF) because of the short distance between the phone and
the user's head. These RF exposures are limited by
Federal Communications Commission safety guidelines
that were developed with the advice of 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 well within the FCC's compliance
limits.
Do wireless phones pose a health hazard?
The available scientific evidence does not show that any
health problems are associated with using wireless
phones. There is no proof, however, that wireless phones
are absolutely safe. Wireless phones emit low levels of
radio frequency energy (RF) in the microwave range while
being used. They also emit very low levels of RF when in
the stand-by mode. Whereas high levels of RF can produce
health effects (by heating tissue), exposure to low level RF
that does not produce heating effects causes no known
adverse health effects. Many studies of low level RF
exposures have not found any biological effects. Some
studies have suggested that some biological effects may
occur, but such findings have not been confirmed by
additional research. In some cases, other researchers
have had difficulty in reproducing those studies, or in
determining the reasons for inconsistent results.
What is FDA's role concerning the safety of wireless
phones?
Under the law, FDA does not review the safety of
radiation-emitting consumer products such as wireless
phones before they can be sold, as it does with new drugs
or medical devices. However, the agency has authority to
take action if wireless phones are shown to emit radio
frequency energy (RF) at a level that is hazardous to the
user. In such a case, FDA could require the manufacturers
of wireless phones to notify users of the health hazard and
to repair, replace or recall the phones so that the hazard
no longer exists.
Although the existing scientific data do not justify FDA
regulatory actions, FDA has urged the wireless phone
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