X
Cell-Phone-Radiation-200

Mobile Cell Phone Radiation

Mobile phone radiation and health concerns have been raised, especially following the enormous increase in the use of wireless mobile telephony throughout the world. This is because cell phones use Electromagnetic radiation in the Microwave range. These concerns have induced a large body of research in animals and in humans.

The mobile phone system is referred to as “cellular telephone system” because the coverage area is divided into “cells“ each of which has a base station antenna. Cell phones use Electromagnetic radiation in the Microwave range around 2.5 GHz range.

Electromagnetic Frequency Spectrum

When we talk on mobile phones, the transmitter takes the sound and encodes on to a continuous “sine wave”. The sine wave radiates out from the antenna and fluctuates evenly through space. Once the encoded sound has been placed on the sine wave, the transmitter sends the signal to the antenna which then sends the signal out. The encoded signals are made up of electromagnetic radiations. These waves are picked up by the receiver in the base station tower. The base station antenna emits radiations continuously to make a link with the subscribers.

Mobile Tower and Base station

Cell phone technology uses electromagnetic radiation in the Giga hertz range. These radiations are close to microwave range and with similar properties. Part of the radio wave emitted from the mobile phone is absorbed by the human head. The radiation emitted by a GSM handset can have a peak power of 2 watts.

The rate at which radiation is absorbed by the human body is measured by the Specific Absorption Rate (SAR) and its maximum levels for modern handset is set between 1.6 to 2 W/Kg averaged for 1 gram tissue. If the SAR level is above the limit, it may cause both Thermal and Non thermal effects on the body especially on the ear and head since these are at the “Near Field” of the radiation. Thermal effect of microwave is the dielectric heating in which any dielectric material such as living tissue is heated by rotations of polar molecules such as water.

In the case of a person using mobile handset for hours in a day, most of the heating effects will occur in the earpinna, internal ear, head surface and even in the brain. Internal ear has fluid filled structures which are more susceptible to heating effect. Brain tissue is delicate and there is blood-brain barrier system to eliminate excess heat generated.

Some of the brain waves that determine mood and alertness resemble the mobile radiation in frequency. So that normal brain functions will be affected even in a few persons using cellphones continuously. Another structure that can be affected by heating is the cornea of the eye. It is the transparent covering on the front part of the eye. Cornea lacks blood supply, so that the heat generated can not be removed and may cause premature cataract. Non thermal effects include alterations in bio-cycles, cellular metabolism, spermatogenesis, abnormalities in foetal developments, miscarriage etc. Some users of mobile phones feel several unspecific symptoms during and after the use of mobile phones in the form of burning and tingling sensations, fatigue, sleep disturbances, dizziness, loss of mental concentration etc. All these may be due to the influence of the radiation on the biomagnetic field of the body.

In short, biological effects of Mobile phone radiation can be summarized as

THERMAL EFFECT

Microwave causes “dielectric heating in the human body. Human tissue is rich in water and exhibit dielectric property (+ and – ve ions). Living tissue heat up through the rotation of polar molecules such as water. This friction causes heating of tissue. Head is in the “near field “ of radiation, so that most of the heating effect occurs in the head. Temperature in the internal ear, brain etc increases to 1 degree or more. This adversely affects the functioning of these organs since these have fluid filled cavities. In short Thermal effect causes

  • Burning sensation in the Scalp and Ear pinna
  • Mood alteration and lack of concentration
  • Lethargy and lack of sleep
  • Whistling sound in the ear
  • Premature Cataract- Cornea of eye lacks blood supply and heat cannot be disposed
  • Confusion and loss of memory since the microwaves interfere with the mood controlling brainwaves
  • Alters sleep physiology and biological rhythm by changing the level of Dopamine, Serotonin hormones

Role of Blood-Brain Barrier – BBB

The blood vessels in the brain and the surrounding tissue form the BBB that can easily dispose heat. But prolonged heating effect can alter brain functions and hearing ability.

Non Thermal Effects

  • Increased cellular responses
  • Leakage of Albumin from blood into the brain due to increased permeability of BBB

Hearing impairments

  • Heating effect in the fluid of internal ear
  • Piercing sound from the speaker causes irritability in the ear drum and internal sensory cells of ear
    Human ear is highly sensitive to waves between 1000 and 6000 Hz

Sleep and EEG Effects

  • Brain waves such as alpha beta ,delta waves will be affected when exposed to pulsed radiations

Microwave Auditory Effect

  • Clicks and Buzzing sound in the head
  • Microwave induces electric current in the hearing centre of the brain and causes Auditory illusion
  • This may happen if music is heard using ear phone or Bluetooth for long time
  • The human ear has a peak sensitivity of 3000 Hz, which causes a sense of unease. Alarms and Mobile ring tones are designed to sound at 3000 Hz.
  • The ear has a very low threshold of hearing for 3000 Hz. A sound of this frequency is very penetrating.

Phantom Pain

Pain in the ear without any specific reasons like infection.This may be due to increased stress on the delicate structures of the internal ear or ear drum by the radiation.

Electromagnetic Hypersensitivity

Unspecific symptoms during and after the use of cell phone

Tingling sensation, fatigue, dizziness, loss of mental attention, reduction in reaction time, memory retentiveness, tachycardia etc.

Precautions

Mobile phone is an excellent communication device. Mobile radiation defects occur only if it is used for prolonged time. Controlled use for communication purpose is always safe. Mobile phones emitting radiation below 2 watts is completely safe. Still, precautionary measures are always good, even though there are fewer case studies in this matter. Try to consider mobile phone as a communication device and not an entertainment device. Even if you are not talking, cell phone is emitting strong signals to keep link with the base station having strongest signal.

Consider some of the precautionary measures :

  1. Do not use mobile phones more than 10 minutes continuously. During conversation, mobile phone will release bursts of energy to keep link with the strongest base station.
  2. Try to use the mobile phone maximum one hour per day. If you want to use it more than this , use Bluetooth or Head phones.
  3. Keep mobile phone away from bed while sleeping. It may affect your sleep physiology.
  4. Don’t give mobile phone to children. Radiation hazard is more in children than adults.
  5. Do not attend mobile phone while driving or operating machinery. It will increase the cognitive load and reduce the reaction time leading to accidents.
  6. Do not use mobile phone near petrol outlet and LPG cylinder. The static electricity in the atmosphere may explode by accepting radiation from the mobile phone. This may cause fire.
  7. Do not use mobile phone when it is connected to charger. Electricity problems may cause shock hazards.
  8. Do not use mobile phone when there is lightning.
  9. Do not over charge, mobile battery. It may reduce its life. Charge battery only when it’s charge level reduces below 40 percent.
  10. Do not send unwanted images or texts through sms or mms. It is an offence.

54 Comments

Join the conversation!

Error! Please fill all fields.
  • Zaakiyah

    I too am feeling these irritating pains and tingles from my cell phone. I recently went to the ER due to migraines and sound and light sensitivity. I was given a brain scan and the tech asked if I use my cell phone alot. The nurse bumped him and asked why he was asking that. When doctors came in I described my concern about cell phone and each denied any correlation and one even smiled slightly, said “no” and walked out. I think it would be so much more than fair to inform the people and seek ways to help rather than ignore it and give the impression that we a “crazy”.
    The same doctor talked with my daughter and she now says I went to the ER due to “lack of attention”. I’m in pain while posting and dealing with it because I know that this is serious. Investigate, inform and address or does the money being justify your Ignore? IGNORANCE!!!

  • vijay rathod

    so can i join this job and i am continous BE barnch electronics

  • vijay rathod

    my 12th % is verry low

  • Gihan Riyansi

    A really helpful article!
    Thank you!

  • Bria Brooks

    I’ve been looking for others who have experienced the tingling and burning sensations. It’s to the point when my eyes are starting to burn. Sometimes just being too close to my phone burns me. I don’t know if it’s because it’s a smart phone or because my battery is hot. I’m not sure what to do. I feel tingling through my whole body.

  • John Williams

    Paula wrote”. . . as soon as I upgraded to a smart phone (Samsung Galaxy 5) and began using email and apps on my phone (Previously I only had call and texting capabilities) I got that vaguely uncomfortable tingly, burning feeling around my head and neck and jaw.”
    Yes. Correct. The electromagnetic radiation from the phone was causing you discomfort.
    Exactly which apps did you delete? I would expect at least one of them to be transmitting while installed.

  • Paula

    I agree more studies need to be done but SOON! So that all the naysayers can finally have the hard data they need to implement protective measures.
    Personally, as soon as I upgraded to a smart phone (Samsung Galaxy 5)and began using email and apps on my phone (Previously I only had call and texting capabilities) I got that vaguely uncomfortable tingly, burning feeling around my head and neck and jaw. I also feel more tired out. I’m a moderate cellphone user too…not heavy.
    Well, today I couldn’t stand it any more (have had this smartphone for about a month) and deleted a handful of apps and IMMEDIATELY felt a dramatic improvement. The burning/tingly feeling reduced to almost nothing.
    I simply don’t believe there are no effects to the body. I am sure it taxes our systems…just based on the way I felt.

  • BloomWorld

    There can be multiple reasons for the phone to heat up.
    Battery: If the battery is not working fine then the phone may get heated
    Charging port: If the heat is at the charging port then there may be chances that the charger is at fault.
    Too much of downloads: If you are used to continuously download something or the other then there are chances of the phone been heated due to excess load on processor
    No rest even at the time of charging: love to stay connected and not letting the phone charged then you are harming the life of the battery.
    Loads of apps and widgets that run round the clock- more pressure on phone: uninstall unnecessary load from the phone to avoid excess use of battery and processor
    Low air flow: keeping the phone in pocket where the airflow is less can also be the reson for phone heat up
    Phone exposed to moisture: long calls and continuous contact between hand and ear creates sweat on the screen and over exposure to moisture can also be the reason for hardware fault and thus heating up

  • Suryakant

    I frequently feel pain in my ears while talking in my mobile , the pain is more when i uses a land line phone.Please advise.

    Mob- 9702072432

    • John Williams

      It could be caused by an infection of some kind; you should consider a visit to an ear-nose-throat doctor or a general practitioner.

      If not caused by infection, the pain probably is electromagnetic — coming from the mobile itself (see http://cellphones.procon.org/view.resource.php?resourceID=003054 or Google others) or from a neighbor’s or business’s use of shared electrical wires to operate a wireless device such as a router, receiver, or transmitter.

      You can reduce electromagnetic ear contact by using a headphone and/or installing one or more snap-on electromagnetic attenuators (picture below). They cost a couple of dollars each and last forever. I got mine at Halted Electronics, 3500 Ryder Street, Santa Clara, CA 95051, but other electronic equipment stores also carry them.

  • John Williams

    Often ignored, but well-documented, is the phenomenon of “microwave hearing”.

    Data on it, and related microwave effects, may be found at
    “Biological Effects of Microwaves: Thermal and Nonthermal Mechanisms” (http://www.scribd.com/doc/45663757/Biological-Effects-of-Microwaves-Thermal-and-Nonthermal-Mechanisms or. originally, at http://arXiv.org/pdf/physics/0102007).

    Here is the abstract:
    For over sixty years, it has been reported that microwave electromagnetic radiation (EMR) had effects on humans which could not be explained by detectible heating of tissue. Auditory responses to radar have been the best known of these phenomena. To account for microwave hearing, many studies in the literature have adopted a rate-of-heating hypothesis advanced by Foster and Finch in 1974. We show here that theoretical and experimental studies supporting this hypothesis are weaker than usually assumed.

    We develop a simple framework of understanding of EMR that may be used to explain microwave hearing as a nonthermal, nonacoustic effect. We then extend this approach to other contexts, pointing out several fundamental misconceptions confounding the field.

    EMR, especially wide-band EMR, primarily must have a nonthermal effect on living tissue before conversion to heat. Auditory and tactile sensations, central neurological disability, and blood pressure loss caused by EMR have been documented. Except microwave hearing, parameters of irradiation causing such effects have not been explored adequately and remain unknown. There appears not to be any forensic methodology to prove the cause of harm at nonthermal levels.

    • Dariusz

      Maybe read one more time this report. He simply cherry pick studies to support his claims ingoring replication by the same authors and ohter better studies falling to see such correlation.

Looking for the latest from TI?
Looking for the latest from TI?