A meta-analysis was performed to evaluate the association between residential exposure to extremely low-frequency magnetic fields and the risk of amyotrophic lateral sclerosis.
Following 5 studies were included: Huss et al. (2009), Marcilio et al. (2011), Frei et al. (2013), Seelen et al. (2014) and Vinceti et al. (2017).
| Group | Description |
|---|---|
| Reference group 1 | distance between residence and power line: ≥ 200 m |
| Group 2 | distance between residence and power line: < 200 m |
| Reference group 3 | magnetic flux density: ≤ 0.1 µT |
| Group 4 | magnetic flux density: > 0.1 µT |
No increased risk of amyotrophic lateral sclerosis was observed (pooled RR: 0.71, CI 0.48-1.07) for the most exposed population group (27 cases either living < 200 m distance from high voltage power lines or magnetic flux density > 0.1 μT). Little heterogeneity and no indication for publication bias was seen.
The authors concluded that no evidence for an association between residential exposure to extremely low-frequency magnetic fields and the risk of amyotrophic lateral sclerosis was found, although the number of exposed cases was low.
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