LG Extravert 2 VN280 User Manual page 103

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 harmfuhealth 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 epidemiologicastudies
of people actually using wireless
phones would provide some of
the data that are needed. Lifetime
animaexposure 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.
Epidemiologicastudies 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 intervabetween 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
epidemiologicastudies is hampered
by difficulties in measuring actuaRF
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 modeof 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. NationaToxicology Program
and with groups of investigators
around the world to ensure that
high priority animastudies 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 InternationaElectro
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