There are currently 6.9 billion cell phones being used worldwide, and there is still no definitive answer as to whether or not the radiation they emit is a health risk. According to, "Cellphones and cordless phones use radio frequency radiation (RF) to send signals. Radio frequency energy is a form of electromagnetic radiation, which can be either ionizing or nonionizing." It can be compared to low power microwaves, and studies show the repeated use of a microwave could be harmful.
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