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NEXUS 4 SAFETY & WARRANTY
NE
of animals would be needed to provide reliable proof of a cancer
promoting effect if one exists. Epidemiological studies can provide
data that is directly applicable to human populations, but ten or
more 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 di
ffi
culties
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.
What is the FDA doing to
fi
nd 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 conducted to address important
questions about the effects of exposure to Radio Frequency (RF)
energy.
The FDA has been a leading participant in the World Health
Organization International Electro Magnetic Fields (EMF) Project
since its inception in 1996. An in
fl
uential 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
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