by Dina Fine Maron May 27, 2016 Scientific American
U.S. government study finds link between cell phones and cancer
Now a huge U.S. National Toxicology Program study finds a link between cell phones and cancer. The researchers found that as the thousands of rats in the new study were exposed to greater intensities of RF radiation, more of them developed rare forms of brain and heart cancer that could not be easily explained away, exhibiting a direct dose-response relationship.
See last paragraph of article for safety steps individuals can take