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Health and safety information
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 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 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 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 radio frequency 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 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.
What steps can I take to reduce my exposure to radio
frequency energy from my wireless phone?
If there is a risk from these products - and at this point we do not know
that there is - it is probably very small. But if you are concerned about
avoiding even potential risks, you can take a few simple steps to
minimize your exposure to radio frequency energy (RF). Since time is a
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