LG Nexus 4 Quick Start Manual page 40

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 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.
. 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
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