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Effect of mobile radiation on health ppt
1. Effect Of Mobile Phone Radiation on
Health
By
Debjeet Nath
3rd Semester
Dept. of Physiology
2. INTRODUCTION
• Everything in this world has its pros and cons.The same is true for the Mobile
Communication technology. Even Alexander GRAHAMBELL, who invented the
first telephone, wouldn’t have imagined in his wildest dreams that telephone
technology would go this far!
• And here we are with a cell-phone in every hand making our lives simpler and
easier to be in contact with whoever we desire.
• The effect of mobile phone radiation on human health is the subject of recent
interest.
3. MOBILE PHONE ???
● Mobile phone (also known as a cellular phone, cell phone, and a hand phone) is a
phone which can received every conversation from wave length by satellite &
without any cord.
● It does so by connecting to a cellular network provided by a mobile phone
operator, allowing access to the public telephone network.
History of Mobile Phone :
Martin Cooper is the first inventor of Mobile Phone & in large scale manufactured
by Motorola Company in 1973.
7. Mobile Radiation
● Cell phones emit signals via radio waves.
● Like televisions, alarm systems, computers, and all other electrical
devices, mobile phones are radio devices that use Radiofrequency (RF)
energy emit electromagnetic radiation.
● They operate at low power (less than 1 watt) by transmitting and receiving
electromagnetic radiation in the radiofrequency (RF) end of the spectrum.
● Electromagnetic radiation is made up of waves of electric and magnetic energy
moving at the speed of light.
8. ● Most of the transmission signals are lost in space, as the signals are sent out 360
degrees from the cell's antenna. Only a small percentage hit the tower.
● Having a mobile tower within 50 m is like being in a microwave oven for 24
hours
9. ● Those living in a 50-300m radius face a high risk-much worse than
smoking as you cannot see or smell radiation.
● Some companies do not take proper permissions before constructing the
towers nor do they get the premises assessed for property tax.
● A survey carried out in Mumbai showed that out of
3700 towers installed whereas 1800 were illegal.
10. Slow Absorption Rate(SAR)
► There are guidelines internationally for short term exposure to cell phone
frequency microwaves, defined in terms of the Specific Absorption Rate (SAR), the
rate at which energy is absorbed by the human body when exposed to radio
frequency radiation.
► It is measured in watts/kg.
► This is regarded as one of the safety valves for mobile phones. In America the
SAR of any mobile phone can not exceed 1.6W/Kg over a gram of tissue.
► The Europeans use the value of 2W/Kg over 10g of tissues.
11. Effects On Human Health
1.Thermal Effect :
• The case of a person using a cell phone, most of the heating effect will occur at the
surface of the head, causing its temperature to increase by a fraction of a degree.
• The cornea of the eye when exposed to 2-3 hours can produce cataract as it does
not have this temperature regulation mechanism.
13. • palpitations of the heart, visual disorders, cardiovascular
problems, respiratory problems.
• More severe reactions include seizures, paralysis, psychosis and
stroke.
• All these are related to changes in the
electrical activity of the brain.
14. 3. Cancer & Brain Tumour
• Cancer happens in extreme cases, with
almost everyone living close to mobile
towers.
• Mobile phone use >10 years doubles risk
of brain cancer.
• Cell phone use also increases risk of
glioma, acoustic neuroma, salivary gland
tumors, facial nerve tumors, skin, blood,
testicular and breast cancer.
15. 4. Risk On Children
Children are more vulnerable as:
• Skulls are smaller & thinner - ↑’s radiation absorption
• ↑rate of Cell division - more susceptible to genetic damage
• Myelin sheath not developed – brain wave activity
• Bone marrow in a child’s skull absorbs 10 times more microwave radiation than
does an adult.
• Children and teenagers, before age of 20 - five times more likely to get brain
cancer if they use cell phones.
16. 5. ELECTROMAGNETIC HYPERSENSITIVITY
Several unspecific symptoms during and after use; ranging from burning and tingling
sensations in the skin of the head and extremities, fatigue, sleep disturbances, dizziness,
loss of mental attention, reaction times and memory retentiveness, headaches,
tachycardia (heart palpitations), to disturbances of the digestive system.
6. GENOTOXIC EFFECT
Australian research conducted in 2009 by subjecting in vitro samples of human
spermatozoa to radio-frequency radiation at 1.8 GHz and specific absorption rates
(SAR) of 0.4 to 27.5 W/kg showed a correlation between increasing SAR and decreased
motility and vitality in sperm, increased oxidative stress, stimulating DNA base adduct
formation and increased DNA fragmentation.
17. 7. Effect On Heart
• Studies suggest, the strength of these fields will not affect ordinary heart rhythm
or function.
• Can present a danger to those with an implanted pacemaker, internal
defibrillator or similar device.
• Problems most likely to arise when pacemakers and defibrillators are being
programmed or reset by medical staff.
18. 8. DECREASED HIP-BONE DENSITY
Men who routinely wear their cell phones clipped to their belts have a reduced
bone mineral content (BMC) and bone mineral density (BMD) in the hip, according
to a study from National University of Cuyo, Mendoza, Argentina. Electromagnetic
radiation is theorized to be the cause of the decrease in bone strength.
9. INDIRECT EFFECT
• Driving, while using a mobile phone is
dangerous
• Cell phones increases risk of traffic
accidents by 4 times
19. PRECAUTIONS
• Plant green trees near the window facing the tower as green plants absorb
radiation.
• There are gadgets called ‘enviro-strips’ that can be placed around the tower to
reduce radiation.
• There are radiation shields are curtains and available for home use.
20.
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24. • Keep the phone at least a foot away from your body and use the
speakerphone setting.
• Use a Bluetooth earpiece, which still emits radiation, but some models
reduce the radiation by 100 times.
• Buy a low radiation phone.
• Do not sleep with mobile phone under the pillow.
• Prefer SMS over calls.
• Avoid living near base stations.
25. Conclusion
Science does not support that the radiation may not be likely to
cause cancer, time may prove differently! And in any case, it may
cause some other type of damage (certainly accidents in cars
from being distracted while fumbling with the phone!)
