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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.
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
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