CURATED BY Susan London
- Men with higher occupational exposure to extremely low frequency (ELF) magnetic fields had an elevated risk for dementia and trends toward elevated risks for motor neuron disease, multiple sclerosis (MS), and epilepsy.
- Previous studies of ELF exposure and neurologic disease have had fairly short follow-up.
- Compared with men in the general population who had never worked at the utilities, men with medium ELF exposure (0.1-0.99 µT) had a trend toward an elevated risk for motor neuron disease (incidence rate ratio, 1.24) and a significantly reduced risk of Parkinson's disease (0.81).
- Men with high ELF exposure (≥1.0 µT) had a significantly elevated risk for dementia (incidence rate ratio, 1.44) and trends toward elevated risks for motor neuron disease (1.78), MS (1.40), and epilepsy (1.34).
- Findings were mixed when the comparator was instead men within the cohort having a lower level of exposure.
- A cohort study of 32,006 male employees of 99 Danish electrical utility companies.
- Main outcomes were risks for neurologic disorders during a mean follow-up of 20.8 y.
- Funding: Danish Energy; Danish Cancer Society.
- The registry identified only cases with hospital contact.
- Findings may have been affected by confounding.
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