Airport scanners aren't a major health risk

Those whole-body scanners at the airport aren't giving you anywhere near the radiation dose of a standard chest X-ray—.1 microsevert of radiation vs. 100 microseverts, according to the director of the Center for Radiological Research at Columbia University Medical Center. That means they aren't really a health risk for individuals, though experts warn that, if the scanners becomes the primary means of airport security, used on everybody who passes through, they could pose problems on a wider, population level.

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