期刊
SCIENTIFIC REPORTS
卷 11, 期 1, 页码 -出版社
NATURE PORTFOLIO
DOI: 10.1038/s41598-021-91349-2
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-
资金
- Dipartimenti di Eccellenza 2018-2022, MIUR, Italy
ALS is a neurodegenerative disease with a fatal prognosis and unknown etiology. Some environmental risk factors, including exposure to magnetic fields, have been suggested. Recent studies have shown positive associations in occupationally-exposed populations, but the link with residential exposure is still debated. Advanced biostatistical tools have found limited evidence of a small association between residential exposure to magnetic fields and ALS.
Amyotrophic lateral sclerosis (ALS) is neurodegenerative disease characterized by a fatal prognosis and still unknown etiology. Some environmental risk factors have been suggested, including exposure to magnetic fields. Studies have suggested positive associations in occupationally-exposed populations, but the link with residential exposure is still debated as is the shape of such relation. Due to recent availability of advanced biostatistical tools for dose-response meta-analysis, we carried out a systematic review in order to assess the dose-response association between ALS and residential exposure to magnetic fields. We performed an online literature searching through April 30, 2021. Studies were included if they assessed residential exposure to electromagnetic fields, based either on distance from overhead power lines or on magnetic field modelling techniques, and if they reported risk estimates for ALS. We identified six eligible studies, four using distance-based and one modelling-based exposure assessment, and one both methods. Both distance-based and particularly modelling-based exposure estimates appeared to be associated with a decreased ALS risk in the highest exposure category, although estimates were very imprecise (summary RRs 0.87, 95% CI 0.63-1.20, and 0.27, 95% CI 0.05-1.36). Dose-response meta-analysis also showed little association between distance from power lines and ALS, with no evidence of any threshold. Overall, we found scant evidence of a positive association between residential magnetic fields exposure and ALS, although the available data were too limited to conduct a dose-response analysis for the modelled magnetic field estimates or to perform stratified analyses.
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