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Safety
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 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 predisposed 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