With over 4 billion cell phones in use worldwide, this once-exclusive device has almost become as common a personal accessory as watches and belts. But unlike your typical neck tie and pocket protector, cell phones must emit radiation to transmit its signal. High-dose radiation can cause cancer through DNA damage and mutations, but what about the low-dose emissions from cell phones?

For the moment, most research studies (related article) and prominent health organizations (i.e., World Health Organization, American Cancer Society, National Institutes of Health) have not linked cell phone use with an increased risk of cancer. But given that the mass adoption of cell phones only occurred approximately 20 years ago, long-term studies are lacking.
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