If the energy is moderately intense, the heart rate will decrease and electrical impulses produced by the brain will be affected. Both of these conditions generally are within the range of normal fluctuation. Extremely high levels of RF are another story. They can cause cataracts, skin and internal burns, heat exhaustion, and heat stroke. Radiation levels from a cell phone may or may not be high enough to cause problems.
Studies are under way to determine the answer.
The FDA will gather a panel of international experts to choose the study topics, find scientists to perform the studies, and oversee the process. Results are expected in about two years. Both studies dealt with the examination of 1,250 patients with brain tumors and an equal number of healthy individuals. It found no increased risk of cancer among those who use cell phones regularly. According to Russell Owen, chief of the FDA radiation biology branch, In all of the available scientific literature, there is nothing that indicates any adverse health effects from using cell phones.