LG 9200 User Manual page 82

Safety Guidelines
know with certainty what the results of such studies
mean for human health.Three large epidemiology
studies have been published since December 2000.
Between them, the studies investigated any possible
association between the use of wireless phones and
primary brain cancer, glioma, meningioma, or acoustic
neuroma, tumors of the brain or salivary gland,
leukemia, or other cancers. None of the studies
demonstrated the existence of any harmful health
effects from wireless phone RF exposures. However,
none of the studies can answer questions about long-
term exposures, since the average period of phone use
in these studies was around three years.
5. What research is needed to decide whether
RF exposure from wireless phones poses a
health risk?
A combination of laboratory studies and
epidemiological studies of people actually using
wireless phones 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
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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 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
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