Samsung SPH-D710ZWABST - Manual (Page 186)

171 4A. Important Safety Information
Do cell phones pose a health hazard?
Many people are concerned that cell phone radiation
will cause cancer or other serious health hazards. The
weight of scientific evidence has not linked cell phones
with any health problems.
Cell phones emit low levels of Radio Frequency (RF)
energy. Over the past 15 years, scientists have
conducted hundreds of studies looking at the
biological effects of the radio frequency energy emitted
by cell phones. While some researchers have reported
biological changes associated with RF energy, these
studies have failed to be replicated. The majority of
studies published have failed to show an association
between exposure to radio frequency from a cell phone
and health problems.
The low levels of RF cell phones emit while in use are
in the microwave frequency range. They also emit RF at
substantially reduced time intervals when in the
stand-by mode. Whereas high levels of RF can
produce health effects (by heating tissue), exposure to
low level RF that does not produce heating effects
causes no known adverse health effects.
The biological effects of radio frequency energy should
not be confused with the effects from other types of
electromagnetic energy.
Very high levels of electromagnetic energy, such as is
found in X-rays and gamma rays, can ionize biological
tissues. Ionization is a process where electrons are
stripped away from their normal locations in atoms and
molecules. It can permanently damage biological
tissues including DNA, the genetic material.
The energy levels associated with radio frequency
energy, including both radio waves and microwaves,
are not great enough to cause ionization of atoms and
molecules. Therefore, RF energy is a type of
non-ionizing radiation. Other types of non-ionizing
radiation include visible light, infrared radiation (heat),
and other forms of electromagnetic radiation with
relatively low frequencies.
While RF energy does not ionize particles, large
amounts can increase body temperatures and cause
tissue damage. Two areas of the body, the eyes and the
testes, are particularly vulnerable to RF heating
because there is relatively little blood flow in them to
carry away excess heat.
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