LG G900UM Guide De Démarrage Rapide page 24

Safety Guidelines
engineered or treated with cancer causing chemicals so as
to be predisposed to develop cancer in the absence of RF
exposure. Other studies exposed the animals to RF for up
to 22 hours per day. These conditions are not similar to the
conditions under which people use wireless devices, 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 devices 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 device RF exposures.
However, none of the studies can answer questions about
long term exposures, since the average period of device use
in these studies was around three years.
5. What research is needed to decide whether RF exposure
from wireless devices poses a health risk?
A combination of laboratory studies and epidemiological
studies of people actually using wireless devices 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 devices. Many factors affect this measurement, such
as the angle at which the device is held, or which model of
device is used.
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