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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 key factor
in how much exposure a person receives, reducing the amount of time
spent using a wireless phone will reduce RF exposure.
"If you must conduct extended conversations by wireless phone
every day, you could place more distance between your body and
the source of the RF, since the exposure level drops off
dramatically with distance. For example, you could use a headset
and carry the wireless phone away from your body or use a
wireless phone connected to a remote antenna.
Again, the scientific data do not demonstrate that wireless phones are
harmful. But if you are concerned about the RF exposure from these
products, you can use measures like those described above to reduce
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