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5. What research is needed to decide whether RF exposure from wireless devices poses
a health risk?
A combination of laboratory studies and epidemiological studies of people actually using
wireless devices would provide some of the data that are needed. Lifetime animal exposure
studies could be completed in a few years. However, very large numbers of animals would be
needed to provide reliable proof of a cancer promoting eect if one exists. Epidemiological
studies can provide data that is directly applicable to human populations, but 10 or more
years’ follow-up may be needed to provide answers about some health eects, 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 diculties in measuring actual RF exposure during
day-to-day use of wireless devices. Many factors aect this measurement, such as the angle at
which the device is held, or which model of device is used.
6. What is FDA doing to nd out more about the possible health eects of wireless
device RF?
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 eects of exposure to radiofrequency energy (RF).
FDA has been a leading participant in the World Health Organization International
Electromagnetic Fields (EMF) Project since its inception in 1996. An inuential 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.
FDA and the Cellular Telecommunications & Internet Association (CTIA) have a formal
Cooperative Research and Development Agreement (CRADA) to do research on wireless
device safety. FDA provides the scientic oversight, obtaining input from experts in
government, industry, and academic organizations. CTIA-funded research is conducted
through contracts to 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.
7. How can I nd out how much radiofrequency energy exposure I can get by using my
wire-less device?
All devices sold in the United States must comply with Federal Communications Commission
(FCC) guidelines that limit radiofrequency energy (RF) exposures. FCC established these