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LG GW300FD | User Guide74
of the studies that showed increased
tumor development used animals
that had been genetically 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 phones, 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
longterm 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 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 domay be many, many years.
The interpretation of epidemiological
studies is hampered by difficulties
in measuring actual RF exposure
Safety Guidelines
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