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Relationship Between the Risk of Childhood Leukemia and Combinations of Power-Frequency and Static Magnetic Fields

Last modified on: Wednesday, November 05, 2008 16:55:58
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A study group from the University of Southern California, in conjunction with NIOSH researchers in Cincinnati, evaluated the hypothesis that the risk of childhood leukemia can be associated with exposure to specific combinations of power frequency and static magnetic fields (SMFs). An increasing trend of leukemia risk was found for subjects whose exposures for at least 80% of the 24-hr monitoring period fell within SMF bands centered at 38.0 and 50.6 microtesla (380 and 506 mG) when assessed by the usual case-control techniques. No association with leukemia risk was found for subjects whose SMF exposures lay outside the 2 bands, even for those in the very high-current configuration. The authors concluded that although the risk estimates were based on limited magnetic field measurements for a small number of subjects, the analysis supports the hypothesis that the risk of childhood leukemia may be related to the combined effects of static and ELF magnetic field exposure. [BENER 12431]


READER COMMENTS
December 10, 1999 - Jane Maheu Have any studies been conducted on third trimester EMF/electrical (i.e. TENS units) exposure with AML, adolescent onset?

August 15, 1997 - A. Mason My wife has a relation who has leukemia. He is 21 years old, has had it since he was 20, and found out today that he was in the final stages. He has been working in an aluminum plant where they melt down aluminum ingots. The furnaces are Electric. Could this enviroment have caused his leukemia? He also dips snuff.

February 11, 1997 - Tim There is believed to be a link between leukemia and Still's Disease (Juvenile Rheumatoid Arthritis). In 1985, we lived in a house in Cheshire, England, with living areas upstairs, bedrooms downstairs - and an electricity substation close to the house, linked to a high-voltage cable immediately adjacent to the house, and right next to the side of my daughter Louise's bedroom. She slept and studied with her head adjacent to the wall against which the cable was buried at shallow depth. At the age of 9 years, she suddenly developed the classic symptoms of Still's Disease (JRA). She has made a good but incomplete recovery, which has affected the whole of her subsequent life. The local Electricity Authorities have strenuously denied any link, but we find the coincidence of the findings and the exact circumstances of Louise's illness too great for comfort. Has anyone explored a link between Still's Disease/Juvenile Rheumatoid Arthritis and high-voltage power cables plus sub-stations? [Editor's Reply: The possible association between EMF exposure and childhood leukemia has been indicated by a number of epidemiologic studies which I think you probably know about since you have investigated the topic. The connection to juvenile rheumatoid arthritis (JRA) is not known to me. We have been keeping a database of EMF literature which currently numbers over 20,000 articles. A quick search of the EMF Database indicates many papers on the use of pulsed magnetic fields and decimeter-band waves to treat JRA but none that relate exposure to an etiologic factor in the condition. In a more general sense, there are many studies which suggest that EMF can have an action on various components of the immune system, in some cases activating reactions and in other cases suppressing an immune system response. The high voltage cable issue raises another point: most larger scale studies have examined an association between presumed magnetic field exposure and childhood leukemia but recently there has been renewed interest in electric fields as a risk factor (especially in the UK). Roger Coghill has suggested the importance of electric field exposure in a number of childhood diseases, asthenia, headache, depressive illness, and other non-cancer conditions. He has a recent paper you might want to look at: European Journal of Cancer Prevention 5(3):153-158, 1996.]


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