Siemens ct66 사용자 설명서

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; VAR issue

 date: 040720

 of CT66 Cingular am, A31008-H7840-A65-1-4A19 (06.08.2004, 11:17)

held mobile phones might be harmful?
Briefly, there is not enough evidence 

to know for sure, either way; howev-

er, research efforts are on-going. 

The existing scientific evidence is 

conflicting and many of the studies 

that have been done to date have 

suffered from flaws in their research 

methods. Animal experiments inves-

tigating the effects of RF exposures 

characteristic of mobile phones have 

yielded conflicting results. A few ani-

mal studies, however, have suggest-

ed that low levels of RF could accel-

erate the development of cancer in 

laboratory animals. In one study, 

mice genetically altered to be predis-

posed to developing one type of can-

cer developed more than twice as 

many such cancers when they were 

exposed to RF energy compared to 

controls. There is much uncertainty 

among scientists about whether re-

sults obtained from animal studies 

apply to the use of mobile phones. 

First, it is uncertain how to apply the 

results obtained in rats and mice to 

humans. Second, many of the stud-

ies showed increased tumor devel-

opment used animals that had al-

ready been treated with cancer-

causing chemicals, and other studies 

exposed the animals to the RF virtu-

ally continuously – up to 22 hours 

per day.
For the past five years in the United 

States, the mobile phone industry 

has supported research into the safe-

ty of mobile phones. This research 

has resulted in two findings in partic-

ular that merit additional study:
1. In a hospital-based, case-control 

study, researchers looked for an as-

sociation between mobile phone use 

and either glioma (a type of brain 

cancer) or acoustic neuroma 

(a benign tumor of the nerve 

sheath). No statistically significant 

association was found between mo-

bile phone use and acoustic neuro-

ma. There was also no association 

between mobile phone use and glio-

mas when all types of gliomas were 

considered together. It should be 

noted that the average length of mo-

bile phone exposure in this study 

was less than three years.
When 20 types of glioma were con-

sidered separately, however, an as-

sociation was found between mobile 

phone use and one rare type of glio-

ma, neuroepithelliomatous tumors. 

It is possible with multiple compari-

sons of the same sample that this as-

sociation occurred by chance. More-

over, the risk did not increase with 

how often the mobile phone was 

used, or the length of the calls. In 

fact, the risk actually decreased with 

cumulative hours of mobile phone 

use. Most cancer causing agents in-

crease risk with increased exposure. 

An ongoing study of brain cancers by 

the National Cancer Institute is ex-

pected to bear on the accuracy and 

repeatability of these results.

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