The news about the potential health dangers of the TSA's naked body scanners just keeps getting worse. An increasing number of doctors and scientists are going public with their warnings about the health implications of subjecting yourself to naked body scanners. These include Dr Russell Blaylock (see below) as well as several professors from the University of California who are experts in X-ray imaging.
At the same time, some internet bloggers are insisting that the TSA's naked body scanners pose no health risks because air travelers are subjected to higher levels of radiation by simply enduring high-altitude flights where cosmic radiation isn't filtered out by the full thickness of the Earth's atmosphere. This comparison, however, is inaccurate: The TSA's body scanners focus radiation on the skin and organs near the skin whereas cosmic radiation during high-altitude flights is distributed across the entire mass of your body.
Comparing the total radiation exposure across your entire body to machine-emitted radiation exposure that focuses its ionizing radiation primarily on your skin is like comparing apples and oranges. You'll see this explained further, below, in the words of these scientists.