Samsung SGH-D415MSATMB - Manual (Page 171)

Health and Safety Information
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These conditions are not similar to the conditions under which
people use wireless phones, so we don’t know with certainty
what 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, glaucoma, 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 phones
RF exposures. However, none of the studies can answer
questions about long-term exposures, since 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
threat?
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 ten 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
during day-to-day use of wireless phones. Many factors affect
this measurement, such as the angle at which the phone is
held, or which model of phone is used.