User's Manual

microwave ranges (which also emit very low levels of RF when they are in standby mode).

While high levels of RF can produce health effects (by heating tissue), exposure to

low-level RF that does not produce heating effects results in no known adverse health

effects. Many studies of low-level RF exposures have not uncovered any biological effects.

Although some studies have suggested that some biological effects may occur, such

findings have not been confirmed by additional research. In some cases, other

researchers have had difficulty in reproducing those studies, and/or determining the

reasons for inconsistent results.

3. What are the results of the research done already?

The research conducted thus far has produced conflicting results, and many studies have

suffered from flaws in their research methods. Animal experiments investigating the effects

of Radio Frequency (RF) energy 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 it

is largely unknown what the results of such studies mean for human health and safety.

Three large epidemiology studies have been published since December 2000. These

studies investigated possible associations between the use of wireless phones and

primary brain cancer (glioma, meningioma, acoustic neuroma, other brain tumors, and

salivary gland tumors), leukemia, or other types of cancer. None of the studies

demonstrated the existence of any harmful health effects from wireless phone RF