LG G4 -H812 User Manual page 20

4. What are the results of the research done already?
The research done thus far has produced conflicting results, and 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 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 do may be many, many years. The interpretation
of epidemiological studies is hampered by difficulties in measuring actual RF exposure
Safety Guidelines
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