Fear that airport scanners are unsafe becomes news without knowledge once again. Kind of old but still out there. http://www.helium.com/items/2037343-tsa-terahertz-scanners-tear-apart-human-dna THz radiation unzips the DNA molecule In a breakthrough study conducted by Dr. Boian Alexandrov at the Center for Nonlinear Studies at Los Alamos National Laboratory in New Mexico and a team of physicists, they discovered terrifying evidence that exposure to THz radiation builds cumulatively and affects human and animal tissue DNA. In essence, it tends to unzip the DNA molecule.
Although THz radiation is non-ionizing, safety considerations for both medical imaging and users should be investigated. No specific guidelines exist for THz radiation. European studies have shown that THz radiation has no effect on cell growth or differentiation. However, tissue damage thresholds, and potential impact on biologic systems are not known. These issues should be addressed for both the imaging applications and for investigators who may be exposed to THz radiation.
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