User guide

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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