The most ubiquitous electrical/electronic inventions are probably the electric motor, the telephone, the light bulb, and alternating current. Human biochemistry, thought, and action are all controlled by electricity, generated by neurons, which transmit information throughout the body in both chemical and electrical forms, and humans can also be affected by extracorporeal electromagnetic radiation. The hazards of ionizing radiation are well known, but there is considerable controversy about the potential dangers of non-ionizing radiation.
Most scientific studies indicate that moderate levels of non-ionizing radiation are safe, but a number of cases have been reported in which individuals have experienced electromagnetic hypersensitivity (EHS), a condition to which negative effects are attributed.
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