Hi, This is a valid concern. Although there is no proof to indicate that mobile phones can cause cancer, there is sufficient debate to cause doubt as to the relative safety. The thing is, it is a mutlibillion dollar industry and it will not be quashed without definite proof, which may not arise for some decades. As a telecommunications engineer I am aware of the poower density levels produced by mobile phones and the effect they can have on different people.
Mobile phones transmit using radio frequency radiation (RFR). Dependant on the network this can range between 800MHz and 2GHz. These are radio waves located within the electromagnetic spectrum. X-rays which are known to cause cancer through ionizing radiation are also within the electromagnetic spectrum, however, RFRs cannot cause cancer in the same way as x-rays because RFRs are non-ionizing.
However, high levels of RFRs can cause health effects through heating the human body (thermal effects). To address this health effect, the Radiocommunications (Electromagnetic Radiation Human Exposure) Standard 1999 specifies limits on public exposure to RF radiation from mobile phones. The limits set by this Standard are only a fraction of the levels needed to cause thermal effects.
Whilst it cannot be shown at this point in time that the thermal effects from mobile phones are a health hazard there is a considerable body of scientific literature which describes the effects of RFR in biological systems that cannot be directly attributed to heating. These effects are referred to as non-thermal and have been demonstrated to cause alteration in animal behaviour, or changes in the functioning of cell membranes.
Digital mobile phones peak power outputs typically correspond to 2 Watts or 2000 milliwatts (mW) which averages to 250 mW of continuous power. The old analogue phones (AMPS system) has peak power limited to 600mW.
The higher power of 2W equates to a SAR (Specific Absorption Rate) of 4W/kg. (= 25mW/sq cm.) Max. allowable as identified in AS-2772 is 200microwatts/square cm. (But this standard does not apply for devices emmitting less than 7W!! Why so?? Although this transmitted level is considerably more that the standard it is only for a short time and the average power level of 250mW would be more applicable, which would result in a level of approx. 3microwatts/sq cm, considerably less than that identified in AS-2772.
As such the scientific basis for assuming there is insufficient evidence for a health hazard is primarily due to the following criteria;
- There is no evidence of a dose response curve.
- There is no known plausible biological mechanism for RFR to cause cancer or other diseases at the levels found with mobile phones.
- The scientific literature on RFR exposure and health effects is inconsistent.
What does this all mean? Well in conclusion, I believe that mobile phones may have some adverse effects, but as it cannot be scientifically proven at present I would suggest that if you are concerned you should;
- Limit the prolonged use of mobiles to under a couple of minutes at a time.
- Use the phone in handsfree speaker mode.
- Avoid using the phone in a confined space (such as in the car or building) as this causes the phone to radiate at the higher power levels to get a signal out.
Personnaly I avoid using the phone as much as possible and if I need to use it I keep it under a few minutes or use hands free.
2007-08-31 15:13:04
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answer #1
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answered by John 5
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If this is true for mobile phone, then it must be true for all communication devices. If this the case, then use of communication devices can not be stopped even at the risk of cancer.
2007-09-03 05:33:41
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answer #2
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answered by Shrichand Nahar 3
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People continue to use their cell phones because cancer has been linked to everything including tap water. How is anybody supposed to live life if everything our everyday life consists of is said to cause cancer?
Until there is actual proof, and doctor's start telling us to stop talking on cell phones it's fine, until then, continue talking... heck, even docs themselves have them.
2007-08-31 21:43:45
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answer #3
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answered by Peatea 5
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I also heard this, but it seems to be difficult to stop, may this prove wrong.
2007-09-01 10:06:38
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answer #4
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answered by Rana 7
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looks more like it affected your spelling
2007-08-31 22:26:01
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answer #5
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answered by Anonymous
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What you state is patently incorrect
2007-08-31 22:06:46
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answer #6
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answered by Knick A 3
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how does it cause cancer
2007-08-31 21:52:10
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answer #7
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answered by sarah s 1
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Won't be long now???
2007-08-31 22:21:18
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answer #8
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answered by Gerald 6
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No, dear.
This is not true.
2007-08-31 21:41:41
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answer #9
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answered by michele 7
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