Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.
A Cohort Study on Alzheimer's Disease in Relation to Residential Magnetic Fields From Indoor Transformer Stations
Authors not listed · 2025
The hazard ratio was 1.02 (95% confidence interval 0.85–1.22), indicating no association between residential ELF magnetic fields from indoor transformer stations and Alzheimer's disease risk.
Plain English Summary
Researchers studied 155,562 individuals living in buildings with indoor transformer stations, comparing 5,652 residents in apartments next to the transformer room (exposed) with 115,772 residents on higher floors (referents). Alzheimer's disease cases were identified from the Drug Purchase Register and the Drug Reimbursement Register, and associations were analyzed with Cox proportional hazard models. The overall hazard ratio for Alzheimer's disease was 1.02 (95% CI 0.85–1.22), showing no increased risk, and the hazard ratio for those who began residence before age 50 was 1.22 (95% CI 0.94–1.57), which was not statistically significant.
Why This Matters
The study design was intended to avoid shortcomings of earlier research on Alzheimer's disease and magnetic fields. Magnetic field exposure was classified by whether the apartment was adjacent to the transformer room or on a higher floor. The duration of residence did not materially alter the hazard ratio, and the findings did not support earlier reports of a link between Alzheimer's disease and occupational or residential magnetic field exposure.
Show BibTeX
@article{a_cohort_study_on_alzheimers_disease_in_relation_to_residential_magnetic_fields_from_indoor_transformer_stations_ce4466,
author = {Unknown},
title = {A Cohort Study on Alzheimer's Disease in Relation to Residential Magnetic Fields From Indoor Transformer Stations},
year = {2025},
doi = {10.1002/bem.70031},
}