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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 FDA doing to find out more about the possible health effects of wireless
phone 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 effects 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 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.
FDA and the Cellular Telecommunications & Internet Association (CTIA) have a
formal Cooperative Research and Development Agreement (CRADA) to do
research on wireless phone safety. FDA provides the scientific 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 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 radiofrequency 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 radiofrequency energy (RF) exposures.
FCC established these guidelines in consultation with FDA and the other federal
health and safety agencies. The FCC limit for RF exposure from wireless telephones
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.
8. What has FDA done to measure the radiofrequency energy coming from
wireless phones?
The Institute of Electrical and Electronic Engineers (IEEE) is developing a technical
standard for measuring the radiofrequency energy (RF) exposure from wireless