LG 505C Guia Del Usuario página 88

Safety Guidelines
many studies have suffered from
flaws in their research methods.
Animal experiments investigating
the effects of radiofrequency
energy (RF) exposures
characteristic of wireless phones
have yielded conflicting results
that often cannot be repeated in
other laboratories. A few animal
studies, however, have suggested
that low levels of RF could
accelerate the development of
cancer in laboratory animals.
However, many 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 pre-
disposed 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
86
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?
Acombination of laboratory
studies and epidemiological
studies of people actually using