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Safety
174
years. However, very large numbers 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 difficulties in measuring actual RF
exposure during day-to-day use of wireless devices. Many factors affect this
measurement, such as the angle at which the device is held, or which
model of device is used.
6. What is the FDA doing to find out more about the possible health
effects of wireless device 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 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 device safety. The FDA provides the scientific
oversight, obtaining input from experts in government, industry, and
academic organizations. CTIA-funded research is conducted through
contracts with independent investigators. The initial research will include
both laboratory studies and studies of wireless device users. The CRADA
will also include a broad assessment of additional research needs in the
context of the latest research developments around the world.
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