Researchers at the Swedish National Institute for Working Life found a link of brain tumor and mobile phones:
… “A total 85 of these 905 cases were so-called high users of mobile phones, that is they began early to use mobile and/or wireless telephones and used them a lot,” the study said.
“The study also shows that the rise in risk is noticeable for tumors on the side of the head where the phone was said to be used,” it added…
He adds the only way to decrease the risk is to use hands-free.