Samsung SGH-I257ZKAATT - Manual (Page 9)

Health and Safety Information 3
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.
Research Results to Date: Is there a connection
between RF and certain health problems?
The results of most studies conducted to date say no. In
addition, attempts to replicate and confirm the few
studies that have shown a connection have failed.