There were apprehensions about possible health hazards of using cell phones. Some countries even banned using cellphones by kids and in schools to minimize exposure. Read about various effects, believed to be caused by using cellphones at wiki. On the otherhand, cell phone users continue to grow around the world, largely fuelled by the middle classes in China and India.
There is no clear scientific evidence that links cellphones to increased risk of cancer. However, wiki notes that,
In the USA, a small number of personal injury lawsuits have been filed by individuals against cellphone manufacturers, such as Motorola, NEC, Siemens and Nokia, on the basis of allegations of causation of brain cancer and death . So far, most of these lawsuits have been dismissed by the courts, on lack of scientific evidence of such a causal relationship, and this has been reducing the motivation of tort lawyers to pursue these health injury lawsuits.
For those who believed in the health hazards linked to increased risk of cancer caused by chronic use of cellphones, here is a good new for you.
Danish researchers have found no link between cancer and long or short-term cell phone use during a 20 year study of 420,000 mobile phone users.
The study, published in the Journal of the National Cancer Institute, matched Denmark's cell phone records against the Danish Cancer Registry. It followed people who started using cell phones between 1982 and 1995, checking them for a range of cancers in 2002. Even though 52,000 of them had been talking away on cell phones for 10 years or more - back when analog cell phones generally emitted more radiation than digital phones do now - the study found their cancer rate was no higher than that of the general population.
Researchers concluded cell phone use was not linked to a higher risk of tumours in the brain, salivary glands, eyes or around the ears - even for those who has been using cell phones for a decade.
The study is the largest yet to find no cancer risk associated with cell phones and the radiation they emit. Just to be sure, Copenhagen's Danish Cancer Society plans to continue tracking Danish cell phone users until some have used the phones for 30 years.