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Brain & Nervous System

Effects of sinusoidal electromagnetic fields on histopathology and structures of brains of preincubated white Leghorn chicken embryos.

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Lahijani MS, Bigdeli MR, Kalantary S. · 2011

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Magnetic fields at household appliance levels caused brain damage in developing chicken embryos, highlighting developmental vulnerability to EMF exposure.

Plain English Summary

Summary written for general audiences

Researchers exposed chicken embryos to magnetic fields similar to power lines before incubation and studied their brain development for 14 days. The exposed embryos showed significant brain damage including increased cell death and tissue breakdown compared to unexposed controls. This suggests that magnetic field exposure during critical development periods can harm the developing nervous system.

Why This Matters

This study adds to mounting evidence that EMF exposure during development poses serious risks to the nervous system. The magnetic field strengths used (1.33 to 7.32 mT) are actually lower than what you might encounter near some household appliances or power transformers, yet still caused measurable brain damage in developing embryos. What makes this research particularly concerning is the timing of exposure during critical developmental windows when the nervous system is most vulnerable. The science demonstrates that even brief EMF exposure before development begins can trigger lasting damage including increased cell death and tissue degeneration. While we can't directly extrapolate from chicken embryos to humans, this research reinforces why pregnant women should minimize EMF exposure, especially from high-magnetic-field sources like certain appliances and electrical installations.

Exposure Details

Magnetic Field
1.33, 2.66, and 7.32 mG
Source/Device
50–60 Hz
Exposure Duration
14 days

Exposure Context

This study used 1.33, 2.66, and 7.32 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: 1.33, 2.66, and 7.32 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Severe Concern rangeFCC limit is 1,504x higher than this level
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

Study Details

Effects of sinusoidal electromagnetic fields on histopathology and structures of brains of preincubated white leghorn hen eggs were investigated.

Three hundred healthy fresh fertilized eggs (55–65 gr) were divided into three groups of experimenta...

Results showed electromagnetic fields have toxic effects on brain cells by increasing the number of ...

These findings suggest that the electromagnetic fields induce brain damages at different levels.

Cite This Study
Lahijani MS, Bigdeli MR, Kalantary S. (2011). Effects of sinusoidal electromagnetic fields on histopathology and structures of brains of preincubated white Leghorn chicken embryos. Electromagn Biol Med. 30(3):146-157, 2011.
Show BibTeX
@article{ms_2011_effects_of_sinusoidal_electromagnetic_669,
  author = {Lahijani MS and Bigdeli MR and Kalantary S.},
  title = {Effects of sinusoidal electromagnetic fields on histopathology and structures of brains of preincubated white Leghorn chicken embryos.},
  year = {2011},
  doi = {10.3109/15368378.2011.596250},
  url = {https://www.tandfonline.com/doi/abs/10.3109/15368378.2011.596250},
}
DOI: 10.3109/15368378.2011.596250

Cited By (13 papers)

Quick Questions About This Study

Yes, a 2011 study found that 50-60 Hz electromagnetic fields from power lines caused significant brain damage in chicken embryos. Exposed embryos showed increased cell death and tissue breakdown compared to controls, suggesting power line frequencies can harm developing nervous systems during critical growth periods.
Research on chicken embryos demonstrated that 50-60 Hz magnetic field exposure increases apoptotic cell death in developing brain tissue. The study showed electromagnetic fields have toxic effects on brain cells, causing both increased cell death and tissue degeneration throughout the 14-day development period.
Yes, exposing chicken embryos to electromagnetic fields before incubation caused significant brain tissue damage. The 2011 research found that this pre-exposure timing resulted in increased brain cell degeneration and tissue breakdown, indicating that EMF exposure during critical early development stages can be particularly harmful.
Studies show 50-60 Hz EMF exposure causes multiple types of brain damage in chicken embryos, including increased apoptotic cell death and tissue degeneration. The electromagnetic fields induced brain damage at different levels throughout the nervous system, affecting normal brain development over the 14-day study period.
Research confirms that power frequency (50-60 Hz) magnetic fields are toxic to developing brain cells in chicken embryos. The study documented increased cell death and brain tissue degeneration in exposed embryos compared to unexposed controls, demonstrating clear toxic effects on the developing nervous system.