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add’l safety information
The U.S. Food and Drug
Administration's Center for
Devices and Radiological
Health Consumer Update on Mobile
Phones
FDA has been receiving inquiries about the safety of mobile
phones, including cellular phones and PCS phones. The
following summarizes what is known—and what remains
unknown—about whether these products can pose a hazard to
health, and what can be done to minimize any potential risk.
This information may be used to respond to questions.
Why the concern?
Mobile phones emit low levels of radio frequency energy (i.e.,
radio frequency radiation) in the microwave range while being
used. They also emit very low levels of radio frequency energy
(RF), considered non-significant, when in the stand-by mode. It
is well known that high levels of RF can produce biological
damage through heating effects (this is how your microwave
oven is able to cook food). However, it is not known whether, to
what extent, or through what mechanism, lower levels of RF
might cause adverse health effects as well. Although some
research has been done to address these questions, no clear
picture of the biological effects of this type of radiation has
emerged to date. Thus, the available science does not allow us
to conclude that mobile phones are absolutely safe, or that they
are unsafe. However, the available scientific evidence does not
demonstrate any adverse health effects associated with the use
of mobile phones.
What kinds of phones are in question?
Questions have been raised about hand-held mobile phones, the
kind that have a built-in antenna that is positioned close to the
user's head during normal telephone conversation. These types
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