Verizon impulse CDM7075 User Manual page 143

SAFETY
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?
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
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.
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