United States must comply with FCC safety guidelines that limit RF
exposure. FCC relies on FDA and other health agencies for safety
questions about devices.
FCC also regulates the base stations that the device networks rely
upon. While these base stations operate at higher power than do the
devices themselves, the RF exposures that people get from these base
stations are typically thousands of times lower than those they can get
from devices. Base stations are thus not the primary subject of the
safety questions discussed in this document.
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 energy (RF)
exposures characteristic of devices 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 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 devices, so we don't 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 devices and primary brain cancer, glioma,
meningioma, or acoustic neuroma, tumors of the brain or salivary
Summary of Contents for GT-B1110
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