As cellphone use continues to increase, especially in younger people, the risks of brain cancers also increase. We have not yet seen large numbers of cases but many experts believe the next decade or two will see more people affected with chronic use. The best option for health is not to use a cell or cordless phone at all. Today that doesn't seem to be a realistic option. The next best options are minimizing talk time, using the speaker phone, or using an air tube wire to your ear.
Study Reveals How Much Cellphone Radiation You’re Getting | Gadget Lab | Wired.com