LG VX8300 User Manual page 99

VX8300_2(E).qxd 2006.4.29
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
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provide reliable proof of a cancer promoting effect
if one 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.
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