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Neuronal cellular responses to extremely low frequency electromagnetic field exposure: implications regarding oxidative stress and neurodegeneration.

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Reale M, Kamal MA, Patruno A, Costantini E, D'Angelo C, Pesce M, Greig NH · 2014

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Power frequency magnetic fields at 1 milliTesla weakened brain cells' antioxidant defenses, potentially increasing vulnerability to neurodegeneration.

Plain English Summary

Summary written for general audiences

Scientists exposed human brain cells to 50 Hz electromagnetic fields from power lines for 24 hours. The EMF exposure caused cellular damage and weakened the cells' natural defense systems, especially when cells were already stressed, suggesting potential links to brain degeneration.

Why This Matters

This research provides compelling evidence that power frequency magnetic fields can disrupt neuronal function at the cellular level. The 1 milliTesla exposure used here is significant - while higher than typical household exposures (usually 0.1-0.4 milliTesla near appliances), it's within the range you might encounter near power lines or electrical equipment. What makes this study particularly concerning is that the EMF exposure compromised the cells' antioxidant defenses when they were already under oxidative stress. The reality is that our brains face multiple stressors daily, and this research suggests EMF exposure may reduce our neurological resilience. The authors' call for further evaluation acknowledges what many independent researchers have been saying: we need to take the neurological effects of EMF exposure seriously, especially given the brain's high oxygen consumption and vulnerability to oxidative damage.

Exposure Details

Magnetic Field
1 mG
Source/Device
50 Hz
Exposure Duration
up to 24 hours

Exposure Context

This study used 1 mG for magnetic fields:

Building Biology guidelines are practitioner-based limits from real-world assessments. BioInitiative Report recommendations are based on peer-reviewed science. Check Your Exposure to compare your own measurements.

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 1 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Severe Concern rangeFCC limit is 2,000x higher than this level
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

Study Details

We evaluated the effects of an electromagnetic wave (magnetic field intensity 1mT; frequency, 50-Hz) on a well-characterized immortalized neuronal cell model, human SH-SY5Y cells.

ELF-EMF exposure elevated the expession of NOS and O2−, which were countered by compensatory changes...

Together these studies support the further evaluation of ELF-EMF exposure in cellular and in vivo preclinical models to define mechanisms potentially impacted in humans.

Cite This Study
Reale M, Kamal MA, Patruno A, Costantini E, D'Angelo C, Pesce M, Greig NH (2014). Neuronal cellular responses to extremely low frequency electromagnetic field exposure: implications regarding oxidative stress and neurodegeneration. PLoS One. 9(8):e104973, 2014.
Show BibTeX
@article{m_2014_neuronal_cellular_responses_to_451,
  author = {Reale M and Kamal MA and Patruno A and Costantini E and D'Angelo C and Pesce M and Greig NH},
  title = {Neuronal cellular responses to extremely low frequency electromagnetic field exposure: implications regarding oxidative stress and neurodegeneration.},
  year = {2014},
  
  url = {https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0104973},
}

Quick Questions About This Study

Yes, a 2014 study found that 50 Hz electromagnetic fields from power lines damaged human brain cells after 24-hour exposure. The EMF weakened cellular defense systems and increased harmful molecules, especially when cells were already stressed from other factors.
Research shows 50 Hz power line EMF significantly worsens brain cell damage when cells are already under oxidative stress. The study found that stressed brain cells exposed to power line frequencies showed declined antioxidant activity and increased harmful oxygen molecules.
Human brain cells showed biological changes after 24 hours of continuous 50 Hz electromagnetic field exposure in laboratory conditions. The study found elevated harmful molecules and compensatory changes in cellular defense systems within this timeframe.
Brain cells initially increase antioxidant enzyme activity to compensate for 50 Hz EMF damage, but this protection fails under additional stress. When cells face both power line EMF and oxidative stress together, antioxidant defenses decline significantly.
Yes, 50 Hz electromagnetic fields rapidly modify gene expression in human brain cells, particularly genes controlling inflammatory responses. The 2014 research found these genetic changes occurred quickly during power line frequency exposure in laboratory studies.