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Note: This study found no significant biological effects under its experimental conditions. We include all studies for scientific completeness.

DNA & Genetic Damage

DNA damage and apoptosis in the immature mouse cerebellum after acute exposure to a 1 mT, 60 Hz magnetic field

No Effects Found

McNamee JP, Bellier PV, McLean JR, Marro L, Gajda GB, Thansandote A · 2002

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Even extremely high 60 Hz magnetic field exposure (1,000x household levels) caused no meaningful DNA damage in developing mouse brains.

Plain English Summary

Summary written for general audiences

Canadian health researchers exposed 10-day-old mice to a strong 1 mT, 60 Hz magnetic field for 2 hours and looked for DNA damage and cell death in their developing brains. While one test showed slight DNA damage at 2 hours, three other tests found no damage, and no brain cell death occurred at any time point. The researchers concluded that this acute magnetic field exposure does not cause meaningful DNA damage in young mouse brains.

Exposure Information

A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 60 Hz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 60 HzCell phones~1 GHzWiFi2.4 GHz5G mm28 GHzLogarithmic scale
Cite This Study
McNamee JP, Bellier PV, McLean JR, Marro L, Gajda GB, Thansandote A (2002). DNA damage and apoptosis in the immature mouse cerebellum after acute exposure to a 1 mT, 60 Hz magnetic field.
Show BibTeX
@article{dna_damage_and_apoptosis_in_the_immature_mouse_cerebellum_after_acute_exposure_to_a_1_mt_60_hz_magnetic_field_ce4145,
  author = {McNamee JP and Bellier PV and McLean JR and Marro L and Gajda GB and Thansandote A},
  title = {DNA damage and apoptosis in the immature mouse cerebellum after acute exposure to a 1 mT, 60 Hz magnetic field},
  year = {2002},
  doi = {10.1016/S1383-5718(01)00302-3},
  
}
DOI: 10.1016/S1383-5718(01)00302-3PubMed: 11719097

Quick Questions About This Study

No, this study found no consistent DNA damage. While one of four tests showed slight damage at 2 hours, the other three tests found nothing, and no effects persisted at later time points.
The 1 mT exposure is extremely high - about 1,000 times stronger than typical household magnetic fields and 100 times the occupational safety limits in many countries.
This study found no increase in brain cell death (apoptosis) in the cerebellum of 10-day-old mice, even after exposure to very high 60 Hz magnetic fields.
Young mice have rapidly developing brains that are considered more vulnerable to environmental damage, making them a sensitive model for detecting potential EMF effects on brain development.
Researchers focused on the cerebellum, specifically the external granule cell layer, which undergoes rapid development in young mice and is important for motor coordination and learning.