The conclusions of science on the effects of devices without which we no longer know how to live
low frequency electromagnetic fields , which include
cell phone radiation, have been
to humans’ by the
International Agency for Research
on Cancer, linked to
the World Health Organization
(WHO). The measure came
as a result of a study that examined the exposure to
mobile phone use of patients diagnosed with brain tumors in 13 countries over 10 years.
In fact, reveals Belina Nunes, a neurologist,”the studies do not find a statistical correlation between the use of mobile phones via ablogtophone.com and a greater number
of cases of brain tumors. However, the results of the Interphone study suggest a possible increased risk of glioma(central nervous system tumor) with high levels of exposure. To answer questions, scientists are preparing to launch a study with more than 25,000 people over
25 years. However, be aware
of what has already been discovered.
ELECTROMAGNETIC RADIATION IS ABSORBED BY THE BODY
This statement is true.”The antenna emits electromagnetic fields of radiofrequency that can penetrate to the brain until four to six centimeters of depth”, says neurologist Belina Nunes. According to the WHO,”with frequency levels used by mobile phones, most energy is absorbed into the skin and other surface tissues, resulting in a negligible temperature rise in the brain or other organs.”
RADIATION FROM MOBILE PHONES DAMAGES LONG-TERM HEALTH
One can not say lightly yes or no. The best answer will be … maybe! The effects of the interaction between the radiations and the human body depend on the intensity, frequency and energy of the electromagnetic fields. The use of mobile phones has been hypothetically associated with some health problems(see box), but WHO contends that, ‘to date, research does not suggest consistent evidence of adverse health effects from exposure
to radiofrequency fields below Which cause tissue heating ‘.
“Given that the widespread and intensive use of mobile phones and cordless phones has only occurred in the last two decades, it is not possible to have definitive conclusions as to the long-term effects,” says Belina Nunes.
THE PHONE MAY INTERFERE WITH THE OPERATION OF PACEMAKERS
This statement is true. The radiation emitted by mobile phones may interfere with medical devices, but according to Moisés Piedade, Coordinator of the Department of Electrotechnology of Instituto Superior Técnico,”the pacemakers on the market are not vulnerable to external electromagnetic radiation”.
In any case,”the possibility of a mobile phone to interfere with a pacemaker or defibrillator can be reduced,
maintaining a distance of at
least 20 centimeters between the
phone and the device ‘reads the
monitoring project site
of Electromagnetic radiation in
Instituto de Telecomunicações /
Instituto Superior Técnico.
CHILDREN ARE MORE VULNERABLE TO RADIATION THAN ADULTS
It is true. You have to admit it! Although
effects of electromagnetic fields are not scientifically recognized ,
“children are at greater
risk because of the lower thickness of the
skull, reaching the
electromagnetic radiation greater
depth inside the brain,”
explains neurologist Belina Nunes.
also subject to an exposure
longer in the course of life,
so that”the WHO position goes in the
direction of each person to decide whether
to or not to limit the exposure
of children, limiting the length of
calls , or using
the Loudspeaker and headset,”
says the monIT project website.
See next page: Is sleeping near the mobile phone or putting it in your shirt pocket harmful?
SLEEPING NEAR THE PHONE OR PUTTING IT IN THE POCKET OF THE SHIRT IS HARMFUL
This statement is false.”Being on but not
communicating, the mobile phone
electromagnetic radiation sometimes
briefly for the
purposes of signaling with the
network,” says the
monIT project website .
close to the phone, or even
using it as an alarm clock,
is not harmful” and that”in case of
walking near the heart, only
specific precautions are needed for those who use
heart stimulators,” he said.
USING A COVER REDUCES THE RADIATION EMITTED BY THE PHONE
One more myth!”If we block
radiation by any process,
the mobile phone receives
signals from the base station with less amplitude
and automatically increases its
emission power, because it thinks
the base station is farther
away,” explains Piedade.
In addition to not reducing the emission of
radiation, the use of covers decreases
the autonomy of the mobile phone.
HAVING THE PHONE SWITCHED ON AT PETROL PUMPS CAN CAUSE EXPLOSIONS
It is true. ‘It may happen
that the radiofrequency emitted
nearby metallic objects , conditions to
high potential difference and that can
cause sparks. In a place with
a fire may occur,”warns
Moisés Piedade, according to which
” this can happen even
if the mobile phone
is not being serviced, if it is connected to a
mobile network operator”.
TALKING TO THE MOBILE PHONE WHILE CHARGING CAN CAUSE A SHOCK
It is true! In normal conditions
it can not happen, but it is
a possibility”if the charger
is damaged and it has
lost the galvanic isolation,
obligatory according to
electromagnetic compatibility ,” says
THE EFFECTS OF MOBILE PHONES ON YOUR HEALTH
The synthesis of the results of some studies:
– Malaise. Some studies
show an increase in complaints such
as dizziness, headache
and tinnitus after prolonged use
of the mobile phone.
– Sleep. One study evaluated
the structure of sleep after three
hours of daily use of the mobile phone
and recorded a decrease in the
phases of slow sleep and increase
in the frequencies associated with
wakefulness, changes that make
sleep more superficial.
– Brain. A study with
healthy volunteers, performed
by CT scan, found
in glucose metabolism in the brain regions
near the antenna, but it was not
possible to conclude whether it is harmful.
– Auditory nerve. The occurrence
of tinnitus and benign tumors
of the auditory nerve has been analyzed
by several studies, without
significant values .
3 LIES ABOUT THE PHONE
- Smaller mobile phones
emit less radiation.
- If the phone is in
silent mode, it emits less radiation.
- The mobile phone brand influences
the radiations it emits.
Measures to reduce radiation exposure to mobile phones:
– Use the loudspeaker, headset and hands-free kits
– Avoid talking in areas with little network reception
– Reduce the number and duration of calls you make and prefer the sms
See the next page: The mandatory rule for operators
There are limits to the
radiation levels emitted by
To guard against
potential health risks, maximum levels
for the levels of
radiation absorbed by the
human body .
According to information
released by the Instituto de
Telecomunicações / Instituto
Portuguese mobile operators are
required to regulate the power of
their antennas to comply with them.
Text: Rita Miguel with Belina Nunes(neurologist and director of Clínica Memória) and Moisés Piedade(department of electrical engineering at Instituto Superior Técnico)