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 studies that showed increased tumor development 

used animals that had already been treated with cancer causing 

chemicals, and other studies exposed the animals to the RF 

virtually 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 safety of mobile 

phones. This research has resulted in two findings in particular 

(FDA)

that merit additional study: 

In a hospital based, case control study, researchers looked for an 

association 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 mobile phone use and acoustic neuroma. There was 

also no association between mobile phone use and gliomas 

when all types of types of gliomas were considered together. It 

should be noted that the average length of mobile phone 

exposure in this study was less than three years. 

ealth and Safety Information 

When 20 types of glioma were considered separately, however, 

H

an association was found between mobile phone use and one 

rare type of glioma, neuroepithelliomatous tumors. It is possible 

tional di with multiple comparisons of the same sample that this 

dA

association occurred by chance. Moreover, 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 increase 

risk with increased exposure. An ongoing study of brain cancers 

by the National Cancer Institute is expected to bear on the 

accuracy and repeatability of these results.(1) 

126