The association is pretty convincing according to author and researcher George Carlo. In his book Cell Phones (Carroll and Graf Publishers, 2001), he documents his research for the wireless industry, the research that finally got him fired. Although industry spokesmen deny that electromagnetic radiation from cell phone antennas has any adverse effects, these same companies have registered 25 patents for devices that shield antennas. Carlo's advice is to use a headset or a phone with a speaker and keep the antenna away from your body. Never allow children to use cell phones. Their developing brains are more susceptible to chromosomal damage, and radiation from the phones is absorbed into the brain at a much higher rate than in adults.