The World Health Organization's International Agency for Research on Cancer is reporting that mobile phones may increase the risk of brain cancer. The agency classified the risk of the adiofrequency electromagnetic fields as "possibly carcinogenic to humans."
Dr Jonathan Samet (University of Southern California, USA), overall Chairman of the Working Group, indicated that "the evidence, while still accumulating, is strong enough to support a conclusion and the 2B classification. The conclusion means that there could be some risk, and therefore we need to keep a close watch for a link between cell phones and cancer risk.
You can read their statement here.