Checks showed the operators were exposed to more electromagnetic radiation than people who work on power lines or in power stations.
In another study, Swedish researchers assessed the long-term exposure of people living near high-voltage transmission lines by taking spot measurements of the field strength in each home, and using them to confirm the accuracy of a computer model that calculated the strength of the fields emitted by each of the lines, according to distance from the lines, the wiring configurations, and the current level the lines were known to be carrying.
Then they programmed a computer with records of past current loads that had been maintained over the previous 20 years for each of the transmission lines. They were thus able to pinpoint with great accuracy EMF exposure for each cancer victim. What they found was a clear dose-response relationship between exposure to even weak power-frequency electromagnetic fields and the development of cancer, especially acute and chronic myeloid leukemia.
A second Swedish study, which also employed cases and controls, was conducted by epidemiologists. It confirmed that average magnetic field exposure over time was the critical factor in the development of disease. Interestingly, these studies were funded in part by the Swedish utility industry.
Maria Feychting of Swedens Karolinska Institute looked at 127,000 children who lived near big power lines for over 25 years and found twice the risk of leukemia.
“In our study we found about a two-fold increase in the risk if the children were living close, within 50 meters (yards) of a big power line,” she told Britain’s Channel Four television.
The new study by the University of Bristol showing that power lines can attract cancer-causing gases like radon has heightened concerns.
Even scientists who have failed to find a reason for the apparent link refuse to say it is safe to live near a high-voltage power line.
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