Contrary to popular belief, cell phone radiation may actually be good for the brain. Researchers say that when they exposed mice genetically predisposed to develop Alzheimer's-like symptoms to the electromagnetic field generated by a standard phone, their cognitive ability was protected. Furthermore, when mice already showing signs of memory problems were exposed to the radiation, their memory deficits disappeared. The mice were exposed to the radiation for two one-hour periods each day for seven to nine months.