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Brain & Nervous System

Examining the effects of extremely low- frequency magnetic fields on cognitive functions and functional brain markers in aged mice

No Effects Found

Authors not listed · 2025

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Intense power line frequency magnetic fields showed no cognitive harm in aged mice despite 12-week exposure.

Plain English Summary

Summary written for general audiences

Researchers exposed aged mice to power line frequency magnetic fields (50 Hz at 1 mT) for 12 weeks to test whether older brains are more vulnerable to EMF effects. The study found no worsening of age-related cognitive decline or brain markers associated with Alzheimer's disease. This suggests that chronic exposure to these common electromagnetic fields may not accelerate brain aging in older populations.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 50 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 50 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale
Cite This Study
Unknown (2025). Examining the effects of extremely low- frequency magnetic fields on cognitive functions and functional brain markers in aged mice.
Show BibTeX
@article{examining_the_effects_of_extremely_low_frequency_magnetic_fields_on_cognitive_functions_and_functional_brain_markers_in_aged_mice_ce4395,
  author = {Unknown},
  title = {Examining the effects of extremely low- frequency magnetic fields on cognitive functions and functional brain markers in aged mice},
  year = {2025},
  doi = {10.1038/s41598-025-93230-y},
  
}
DOI: 10.1038/s41598-025-93230-yPubMed: 40069380

Quick Questions About This Study

No, the study found that 12 weeks of 1 mT 50 Hz magnetic field exposure did not worsen age-related memory decline in aged mice compared to unexposed controls.
This study found no evidence that chronic 50 Hz magnetic field exposure promotes brain proteins or pathways associated with Alzheimer's disease development in aged mice.
The 1 mT exposure used in this study is 100-10,000 times stronger than typical household magnetic field levels from power lines and appliances.
No, the study measured specific brain inflammation markers (S100b and GFAP proteins) and found no difference between EMF-exposed and control aged mice.
This mouse study suggests aged brains may not be more vulnerable, but researchers caution against extrapolating to older humans with various health conditions.