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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 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 phone
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 phone 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 find out how much Radio Frequency energy exposure I can get by using my wireless
phone?
All phones sold in the United States must comply with Federal Communications Commission (FCC)
guidelines that limit Radio Frequency (RF) energy exposures. The FCC established these guidelines
in consultation with the FDA and the other federal health and safety agencies. The FCC limit for RF
exposure from wireless phones is set at a Specific Absorption Rate (SAR) of 1.6 watts per kilogram
(1.6 W/kg). The FCC limit is consistent with the safety standards developed by the Institute of
Electrical and Electronic Engineering (IEEE) and the National Council on Radiation Protection and
Measurement. The exposure limit takes into consideration the body's ability to remove heat from
the tissues that absorb energy from the wireless phone and is set well below levels known to have
effects. Manufacturers of wireless phones must report the RF exposure level for each model of
phone to the FCC. The FCC website (http://www.fcc.gov/oet/rfsafety) gives directions for locating
the FCC identification number on your phone so you can find your phone's RF exposure level in the
online listing.
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