Samsung SGH-P735 User Manual (ENGLISH) - Page 176

studies can provide data that is directly applicable to human, populations

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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, gioma, 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. 11. 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. 12. Which other federal agencies have responsibilities related to potential RF health effects? Appendix C: Consumer update on wireless phones 175

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Appendix C: Consumer update on wireless phones
175
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, gioma, 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.
11. 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.
12. Which other federal agencies have responsibilities related to
potential RF health effects?