Lg LGVX7100 User Manual download pdf (Page 105)

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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 do not 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, 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 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.

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