LG RD7130, Руководство пользователя

Страница: 44 / 91

LG-RD7130
85
LG-RD7130
84
phones would provide some of the data that are
needed. Lifetime animal exposure studies could be
completed in a few years. However, very large num-
bers of anime 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 inter-
pretation 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.
6. What is FDA doing to find out more about the
possible health effects of wireless phone RF?
FDA is working with the U.S. National Toxicology
Program and with groups of investigators around the
world to ensure that high priority animal studies are
conducted to address important questions about the
effects of exposure to radiofrequency energy (RF).
FDA has been a leading participant in the World
Health Organization International Electromagnetic
Fields (EMF) Project since its inception in 1996. An
influential result of this work has been the develop-
ment of a detailed agenda of research needs that
has driven the establishment of new research pro-
grams around the world.The Project has also helped
develop a series of public information documents on
EMF issues.
FDA and the Cellular Telecommunications & Internet
Chapter 8
Safety Guidelines
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 pre-disposed to devel-
op 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 con-
ditions 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 pub-
lished 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 neu-
roma, tumors of the brain or salivary gland, leukemia,
or other cancers. None of the studies demonstrated
the existence of any harmful health effects from wire-
less phone RF exposures. However, none of the
studies can answer questions about long-term expo-
sures, 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 epidemio-
logical studies of people actually using wireless