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. 2007 Dec;64(12):820-6.
doi: 10.1136/oem.2006.031559. Epub 2007 Jul 11.

Mortality from Alzheimer's, motor neuron and Parkinson's disease in relation to magnetic field exposure: findings from the study of UK electricity generation and transmission workers, 1973-2004

T Sorahan  1 , L Kheifets
Affiliations

Mortality from Alzheimer's, motor neuron and Parkinson's disease in relation to magnetic field exposure: findings from the study of UK electricity generation and transmission workers, 1973-2004

T Sorahan et al. Occup Environ Med. 2007 Dec.

Abstract

Background: There are a number of reports linking magnetic field exposure to increased risks of Alzheimer's disease and motor neuron disease.

Methods: The mortality experienced by a cohort of 83 997 employees of the former Central Electricity Generating Board of England and Wales was investigated for the period 1973-2004. All employees were employed for at least six months with some employment in the period 1973-82. Computerised work histories were available for 79 972 study subjects for the period 1971-93. Information on job and facility (location) were used to estimate exposures to magnetic fields. Two analytical approaches were used to evaluate risks, indirect standardisation (n = 83 997) and Poisson regression (n = 79 972).

Results: Based on serial mortality rates for England and Wales, deaths from Alzheimer's disease and motor neuron disease were unexceptional. There was an excess of deaths from Parkinson's disease of borderline significance. No statistically significant trends were shown for risks of any of these diseases to increase with lifetime cumulative exposure to magnetic fields (RR per 10 μT-y: Alzheimer's disease 1.10 (95% CI 0.90 to 1.33); motor neuron disease 1.06 (95% CI 0.86 to 1.32); Parkinson's disease 0.88 (95% CI 0.74 to 1.05))

Conclusions: There is no convincing evidence that UK electricity generation and transmission workers have suffered increased risks from neurodegenerative diseases as a consequence of exposure to magnetic fields.

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Conflict of interest statement

Competing interests: None declared.

Comment in

References

    1. Theriault G, Goldberg M, Miller A B.et al Cancer risks associated with occupational exposure to magnetic fields among electric utility workers in Ontario and Quebec, Canada, and France: 1970–1989. Am J Epidemiol 1994139550–572. - PubMed
    1. Savitz D A, Loomis D P. Magnetic field exposure in relation to leukaemia and brain cancer mortality among electric utility workers. Am J Epidemiol 1995141123–134. - PubMed
    1. Sorahan T, Nichols L, van Tongeren M.et al Occupational exposure to magnetic fields in relation to mortality from brain tumours: updated and revised findings from a study of United Kingdom electricity generation and transmission workers. Occup Environ Med 200158626–630. - PMC - PubMed
    1. Johansen C, Olsen J H. Risk of cancer among Danish utility workers. Am J Epidemiol 1998147548–555. - PubMed
    1. Kheifets L, Gilbert E, Sussman S.et al Comparative analysis of the studies of magnetic fields and cancer in electric utility workers: studies from France, Canada, and the United States. Occup Environ Med 199956567–574. - PMC - PubMed

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