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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 effect 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 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
radiofrequency energy (RF). The 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. 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.
For Your Safety
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