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Safety
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
(CRADA) to do research on wireless phone safety. The FDA provides
the scientific oversight, obtaining input from experts in government,
industry, and academic organizations. CTIAfunded research is conducted
through contracts with 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.