Word: electromagneticism
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Although the research does not prove cause and effect, it shows an unmistakable correlation between the degree of exposure and the risk of childhood leukemia. "From a research point of view, they add significant information," says Stan Sussman, manager of electromagnetic-field studies for the Electric Power Research Institute, a...
What makes the Karolinska study particularly significant is the thoroughness of its design. The investigation encompassed nearly 500,000 people. By restricting their analysis to high-power transmission lines, the researchers could easily calculate the field strength for each household studied and be assured that the lines were the dominant...
One of the most telling results was that the cancer risk grew in proportion to the strength of the electromagnetic field. Children with constant exposure to the weakest fields, calculated at less than 1 milligauss (about the same that a coffee maker generates when it is brewing), had the lowest...
The second study looked at 1,632 men in central Sweden, 511 of whom had contracted leukemia or brain tumors. Adjusting for exposures to various other environmental factors, the researchers concluded that, compared with the other men, more of the leukemia patients had occupational exposures to electromagnetic radiation.
"I think it will take a long time before we have final proof," Maria Feychting says. But even if the link holds up, she notes, people should not panic: "The risk for leukemia is very small -- 1 out of 20,000 children a year." Reacting too hastily to scientific findings...