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Safety Guidelines
years follow-up may be needed
to provide answers about some
health effects, such as cancer.
This is because the interval
between the time of exposure to
a cancer-causing agent and the
time tumors develop - if they do-
may be many, many years. The
interpretation of epidemiological
studies is hampered by
difficulties in measuring actual RF
exposure during day-to-day use
of wireless phones. Many factors
affect this measurement, such as
the angle at which the phone is
held, or which model of phone is
used.
6. What is the FDA doing to find
out more about the possible
health effects of wireless
phone RF?
The FDA is working with the
U.S. National Toxicology Program
and with groups of investigators
around the world to ensure that
high priority animal studies are
90
conducted to address important
questions about the effects
of exposure to radiofrequency
energy (RF). The FDA has
been a leading participant in
the World Health Organization
International Electromagnetic
Fields (EMF) Project since its
inception in 1996. An influential
result of this work has been
the development of a detailed
agenda of research needs that
has driven the establishment of
new research programs around
the world. The project has also
helped develop a series of public
information documents on EMF
issues. The FDA and the Cellular
Telecommunications & Internet
Association (CTIA) have a formal
Cooperative Research and
Development Agreement (CRADA)
to do research on wireless phone
safety. The FDA provides the
scientific oversight, obtaining
input from experts in government,
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