"Living near high-voltage power lines raises children's risk of leukemia by 69%, a British study shows"
"That doesn't prove that power lines cause the deadly blood cancer, the study's authors are quick to point out. Despite 30 years of research, scientists still can't come up with a plausible reason why the weak magnetic fields near power lines might cause leukemia.
Gerald Draper, DPhil, director of the childhood cancer research group at Oxford University, led the study. Draper's team compared more than 29,000 children with cancer, including 9,700 children with leukemia, to age-, sex-, and birthplace-matched children without cancer. The children's birth homes were located on the power grids of England and Wales.
Compared with children who lived more than 600 meters from a high-voltage power line, those who lived within 200 meters of the power lines had a 69% greater risk of leukemia. Those living 200 to 600 meters from power lines had a 23% higher risk of leukemia. The findings appear in the June 4 [2005] issue of the British Medical Journal.*"
So they don't know why it's bad (or so difficult to spell), just that it is. As one who watched his father (who, incidentally, was a specialist radio-operator during the second WW and an amateur one for the rest of his, all-too-short life) die of leukaemia (and as one who has microwaved an egg...), to me proximity of powerful electro magnetic currents would, as I said, be a big no-no.
YVMV
*some evidence to read