How the radiation affects us?
The body can collect the signal and turn it into electric currents just like the antenna of a radio set or a cell phone. These currents are carried by ions (electrically charged atoms or molecules) flowing through the living tissues and in the blood vessels (a system of tubes full of an electrically-conducting salty fluid that connect almost every part of the body). When these currents impinge on cell membranes, which are normally electrically charged, they try to vibrate in time with the current. Pure unmodulated radio frequency signals change direction far too quickly to cause serious vibration. Almost as soon as the membrane starts to move in one direction, it is driven back in the other so it remains more or less stationary.

However, living cell membranes are able to demodulate these modulated signals and extract the more dangerous lower frequencies, which can now cause significant vibration on a molecular scale. In particular, they drive the negatively charged molecules of the membrane and the positively charged ions, which are attached to it, in opposite directions. As a result, some of these ions are shaken loose. Those with a double charge, such as calcium ions are lost preferentially and replaced by others with only one charge, which are less affected. But ions with one charge are less able to stabilise the membrane, which therefore becomes weaker and more inclined to leak. This in turn can produce all sorts of unwanted biological effects, ranging from electromagnetic hypersensitivity (EHS) to a loss of fertility and an increased risk of getting cancer. 

EHS may become a major problem for us all. Although only a few percent of the population are at present electrosensitive, the condition can be brought on in hitherto healthy people by repeated or prolonged exposure to the radiation. However, it sometimes takes many years to develop so, even if you are currently one of the lucky ones who are not affected, there is no guarantee that it will stay that way.

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Andrew Goldsworthy BSc PhD 
Lecturer in Biology (retired) 
Imperial College London

Thermographic Imaging Test
Cell phone radiation has the potential to heat up the head where the phone is pressed against. This thermal heating effect can cause headaches, fatigue, tissue swelling, tingling and other potentially severe and long-term damages.

After 15 minutes of using a cell phone, with exposure to cell phone radiation EMF, the orange, red and pink color show significant, dangerous heat and the green and blue color show cool tissue, your head`s temperature remain normal.  The symptoms of prolonged exposure to EMF radiation include headache, fatigue, memory loss, sleep disorder, hormonal imbalances, loss of libido, anxiety and depression. 

FDA's recommendations on children using cell phones

The scientific evidence does not show a danger to any users of cell phones from RF exposure, including children and teenagers. The steps adults can take to reduce RF exposure apply to children and teenagers as well.

• Reduce the amount of time spent on the cell phone
• Use speaker mode or a headset to place more distance between the head and the cell phone.

Some groups sponsored by other national governments have advised that children be discouraged from using cell phones at all. For example, The Stewart Report from the United Kingdom made such a recommendation in December 2000. In this report a group of independent experts noted that no evidence exists that using a cell phone causes brain tumors or other ill effects. Their recommendation to limit cell phone use by children was strictly precautionary; it was not based on scientific evidence that any health hazard exists.