It has been a long-term issue that mobile phone radiation may cause health problems, but until now, there was no strong scientific evidence to support this claim.

There were researches conducted to determine its negative effects to health, some claimed their studies to be successful, while others failed. Those who claimed that their experiments on animals (i.e. rats) are triumphant, did not stand the dispute.

Some claimed that this type of radiation from mobile phones may trigger the growth of cancer cells, can contribute to the occurrence of Alzheimer's disease and can even cause headache, among others.

As a radiation worker, based on what I have learned and read from various sources, I don't believe on such assertion/s. I am not saying that radiation is safe. I am not denying the fact that radioactive materials, or even x-rays, may cause adverse effects, especially to human; but this effects can only happen due to prolonged radiation exposure.

Thus, for me, it would be unfair to relate radiation to negative side effects without concrete proof. Studies and researches are still carried out until now to prove this allegations. For additional reading related to this topic, you may visit this link: http://www.globalchange.com/radiationnews.htm