Since the middle of the last century, technological advancements in telecommunications and other industries have led to significant increases in the use of radio frequencies. Equipment employing microwave and radio waves is today widely used not just in broadcasting and communications, but also in the health care industry, the food industry, and in a host of other industries in a wide range of applications.
Various studies researching the health effects of cell phone use have yielded mixed results. Some studies suggested a link between exposure to radiation from cell phones and an increased risk of -a tumor of the nerve connecting the ear to the brain–but more recent research found no such links.
As high frequency radio frequency radiation…penetrates the body, the exposed molecules move about and collide with one another causing friction and, thus, heat…If the radiation is powerful enough, the tissue or skin will be heated or burned.
There is substantial scientific data that establishes negative health effects associated with microwave radiation. One possible negative health effect from prolonged exposure, as well as well as nervous system damage and even reproductive problems in both males and females. This issue was in the news in 1992 over the issue of the safety of police radar devices, but subsequent studies were inconclusive.

The environmental effects of radio frequencies are also largely unclear. Migrating birds have been known to fly right into cell phone and other communications towers. Some blame the radiation emanating from such towers for disorienting the birds and undermining their navigational abilities. Others chalk such incidents up to poor visibility associated with bad weather and nothing more.
Some farmers have observed that cows grazing near cell towers are more likely to experience still births, spontaneous abortions, birth deformities and behavioral problems, not to mention general declines in overall health. Moving cattle herds away from such towers has reportedly led to immediate health improvements.