When it comes to cell phones, scientists have looked at findings from animal research and cells in test tubes exposed to RF radiation in a lab, as well as observational studies in humans. Just how worrisome the effects are is a matter of considerable and ongoing debate. That means unlike ionizing radiation-from, say, ultraviolet light from the sun, medical tests such as CT scans or X-rays, or nuclear explosions-they don't carry enough energy to directly break or alter your DNA, which is one way cancer can occur.īut some research suggests that nonionizing radiation can have measurable effects on living organisms. The RF signals from cell phones, as well as Bluetooth and WiFi, are considered nonionizing forms of radiation. To find out, we talked with experts about what they thought about radiation from these sorts of devices, and to see whether there are any steps that people who may be concerned can take to reduce their risk. And any WiFi-connected smart devices in your home also receive and transmit data using this type of energy. Smartwatches use RF to connect to your phone. Bluetooth headphones and speakers also rely on RF signals to play music. Like cell phones, routers use radio frequency (RF) energy-a form of electromagnetic radiation-to bring wireless internet to your computer, TV, and other devices. That includes how relevant the findings are to newer wireless technologies such as Bluetooth and WiFi that have become widespread since the study was designed in the early 2000s. But that research- a 10-year, $25 million government study in rodents-left a lot of key questions unanswered. Recent research has resurfaced concerns among scientists about a potential link between cell-phone radiation and cancer.
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