LG LG400G Guia Del Usuario página 69

LG400G Tracfone_ENG_080111
Safety Guidelines
so we don't 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
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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 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.
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