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Chronic exposure to an extremely low-frequency magnetic field induces depression-like behavior and corticosterone secretion without enhancement of the hypothalamic-pituitary-adrenal axis in mice.

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Kitaoka K, Kitamura M, Aoi S, Shimizu N, Yoshizaki K. · 2013

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Chronic magnetic field exposure induced depression-like behavior and stress hormone disruption in mice at 3 milliTesla, thousands of times higher than typical household levels.

Plain English Summary

Summary written for general audiences

Researchers exposed mice to extremely low-frequency magnetic fields (ELF-MF) at 3 milliTesla for 200 hours to study effects on mood and stress hormones. The exposed mice showed depression-like behaviors, increased anxiety, and elevated levels of corticosterone (a stress hormone), suggesting that chronic magnetic field exposure may affect mental health and stress response systems.

Why This Matters

This study adds important evidence to growing concerns about EMF effects on mental health and stress physiology. The 3 milliTesla exposure level used here is extremely high compared to typical household magnetic fields, which usually measure in microTesla ranges (thousands of times lower). However, the biological pathway identified - disrupted corticosterone regulation without classical stress axis activation - suggests EMF may affect hormone systems through novel mechanisms. What makes this research particularly significant is that it demonstrates measurable behavioral changes alongside specific biochemical alterations, providing a clearer picture of how magnetic field exposure might translate into real-world health effects. The findings align with epidemiological studies linking EMF exposure to depression and anxiety in humans, though more research is needed to establish exposure thresholds relevant to everyday environments.

Exposure Details

Magnetic Field
3 mG
Exposure Duration
200 h

Exposure Context

This study used 3 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: 3 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Severe Concern rangeFCC limit is 667x higher than this level

Study Details

The present research aimed to observe Chronic exposure to an extremely low-frequency magnetic field induces depression-like behavior and corticosterone secretion without enhancement of the hypothalamic-pituitary-adrenal axis in mice.

we investigated whether chronic ELF-MF exposure (intensity, 3 mT; total exposure, 200 h) affected em...

ELF-MF-treated mice showed a significant increase in total immobility time in a forced swim test and...

Our findings suggest the possibility that high intensity and chronic exposure to ELF-MF induces an increase in corticosterone secretion, along with depression- and/or anxiety-like behavior, without enhancement of the hypothalamic–pituitary–adrenal axis.

Cite This Study
Kitaoka K, Kitamura M, Aoi S, Shimizu N, Yoshizaki K. (2013). Chronic exposure to an extremely low-frequency magnetic field induces depression-like behavior and corticosterone secretion without enhancement of the hypothalamic-pituitary-adrenal axis in mice. Bioelectromagnetics. 34(1):43-51, 2013.
Show BibTeX
@article{k_2013_chronic_exposure_to_an_664,
  author = {Kitaoka K and Kitamura M and Aoi S and Shimizu N and Yoshizaki K.},
  title = {Chronic exposure to an extremely low-frequency magnetic field induces depression-like behavior and corticosterone secretion without enhancement of the hypothalamic-pituitary-adrenal axis in mice.},
  year = {2013},
  doi = {10.1002/bem.21743},
  url = {https://onlinelibrary.wiley.com/doi/abs/10.1002/bem.21743},
}
DOI: 10.1002/bem.21743

Cited By (43 papers)

View all 43 citing papers on Semantic Scholar

Quick Questions About This Study

Research suggests magnetic field exposure may contribute to depression-like symptoms. A 2013 study found mice exposed to extremely low-frequency magnetic fields showed increased depression-like behaviors and elevated stress hormones compared to unexposed animals, indicating potential mental health effects.
EMF exposure may increase anxiety according to laboratory research. Mice chronically exposed to magnetic fields demonstrated heightened anxiety behaviors and increased reluctance to explore new environments, suggesting electromagnetic fields could influence anxiety-related responses in the nervous system.
EMF exposure appears to disrupt stress hormone balance. Research shows mice exposed to magnetic fields had significantly elevated corticosterone (stress hormone) levels without normal stress pathway activation, indicating electromagnetic fields may interfere with the body's natural stress response mechanisms.
EMF exposure may pose mental health risks including depression and anxiety. Laboratory studies demonstrate that chronic magnetic field exposure can trigger depression-like behaviors and stress hormone imbalances, though more human research is needed to confirm these effects.
Magnetic fields may negatively impact mood through stress hormone disruption. Research shows chronic exposure increases depression-like behaviors and elevates stress hormones without activating normal stress pathways, suggesting electromagnetic fields could interfere with brain chemistry affecting emotional well-being.