Out of different sources of unnatural radiation causing pollution such as electrical equipment and wiring, metallic objects, micro-wave or radio frequency technology as used in cellphones, digital TVs, microwave ovens, mobile phones and mobile phone towers and Wi-Fi systems are turning out to be the biggest enemy of human health. Due to massive proliferation of RF/microwave technology, both the personal and public environment is saturated with these manmade invisible radiations increasing threat to our health manifold. It is believed that we are exposed to around one billion times more unnatural radiations than our forefathers who lived a century ago. Consequently, we are becoming electro sensitive, which means that we are reacting to electro-magnetic radiations that surround our lives in every possible manner.Generally, the whole body human absorption of RF energy varies with the frequency of the RF signal.
The most restrictive limits on whole body exposure are in the frequency ranges of 30 to 300 Mhz where the human body absorbs RF energy most effectively. Electromagnetic radiation absorbed in human body is measured in units called the specific absorption rate (SAR) which is usually expressed in units of Watts per Kilogram (w/kg) or mille Watts per Gram (mw/g). SAR level is commonly used to describe the radiation absorbed close to the body, that is the head, with respect to mobile phone usage. SAR is also used to determine whole body exposure and reflects more to exposure to Wi-Fi and cell phone towers.
In the US, the maximum SAR level limit for general public whole body is 0.08w/kg and partial body is less than 1.6w/kg. The National Council for Radiation Protection and Measurement there has recommended a public exposure limit of 200 micro watts per square centimetres in the 30 to 300 MHz. In India, the Department of Telecommunication (DoT) and the Telecom Regulatory Authority of India (TRAI), set up in 1997, has formulated the draft guidelines on the basis of International Commission on Non-Ionizing Radiation Protection (ICNIRP) guidelines in respect of SAR levels. ICNIRP allows emission of radiation rate of 9.2 watts per square metres and as per its 2008 report, mobile phones are low powered RF devices transmitting maximum peak powers in the range of 0.6 to 2.00 W/kg. In India, the prescribed SAR limit is 2 watt per kg which is averaged over a six minute period.
Safety standards
One latest research from Austria has revealed that non-thermal biological damage occurs at SAR levels of only 0.1 w/kg, which is much below the accepted SAR levels. Latest scientific researches show that unless some effective preventive measures are taken at the earliest, the world is going to face the new health epidemic from this new biologically untested technology.
Another quite shocking revelation is regarding Wi-Fi technology which was introduced to the US public in 1997 without being subjected to any prior tests. No testing has been done even to determine the safety of digital broadcast format, whereas the digital signals which are modulated radio waves are said to be 250 times stronger than the previous un-modulated analog based signals and emits more harmful radiation posing the greatest threat to our health.
Really informational post this is! Yes, I agree with you. Cell phones are really harmful for our brains. It can be caused for brain tumors or other brain diseases.