LG G4010 User Manual page 54

Satety Guidelines
The term "wireless phone" refers here to handheld wireless phones
with built-in antennas, often called "cell", "mobile", or "PCS"
phones. These types of wireless phones can expose the user to
measurable radiofrequency energy (RF) because of the short
distance between the phone and the user's head.
These RF exposures are limited by FCC safety guidelines that were
developed with the advice of the FDA and other federal health and
safety agencies. When the phone is located at greater distances from
the user, the exposure to RF is drastically lower because a person's
RF exposure decreases rapidly with increasing distance from the
source. The so-called "cordless phones," which have a base unit
connected to the telephone wiring in a house, typically operate at far
lower power levels, and thus produce RF exposures far below the
FCC safety limits.
4.What are the results of the research done already?
The research done thus far has produced conflicting results, and
many studies have suffered from flaws in their research methods.
Animal experiments investigating the effects of radiofrequency
energy (RF) exposures characteristic of wireless phones have
yielded conflicting results that often cannot be repeated in other
laboratories. A few animal studies, 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 develop 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
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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.
6.What is the FDA doing to find out more about the possible
health effects of wireless phone RF?
The 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).
The FDA has been a leading participant in the World Health
Organization International Electromagnetic Fields (EMF) Project since
Satety Guidelines
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