Influence of low frequency magnetic field on chosen parameters of oxidative stress in rat's muscles.
Ciejka E, Skibska B, Kleniewska P, Goraca A. · 2010
View Original AbstractTherapeutic magnetic field devices at 7 milliTesla caused oxidative stress in rat muscle tissue after just two weeks of daily exposure.
Plain English Summary
Polish researchers exposed rats to 40 Hz magnetic fields (the type used in medical magnetotherapy) for either 30 or 60 minutes daily over two weeks. They found significant biochemical changes in muscle tissue, including increased sulfur compounds and altered protein levels, indicating the magnetic fields triggered oxidative stress. This suggests that even therapeutic magnetic field devices can cause measurable cellular damage in muscle tissue.
Why This Matters
This study adds important evidence to our understanding of how extremely low frequency magnetic fields affect cellular health, even at levels considered therapeutic. The 7 milliTesla exposure used here is significantly higher than typical household EMF levels (which range from 0.01 to 1 milliTesla near appliances), but it's precisely the intensity used in medical magnetotherapy devices that millions of people use for pain relief and healing. The researchers found clear biochemical markers of oxidative stress in muscle tissue after just two weeks of exposure. What makes this particularly concerning is that oxidative stress is a fundamental mechanism underlying numerous health problems, from accelerated aging to chronic inflammation. The fact that these changes occurred with therapeutic devices that are marketed as beneficial highlights the complex reality of EMF bioeffects. The science demonstrates that magnetic fields can trigger measurable biological responses even when they're intended to help, not harm.
Exposure Details
- Magnetic Field
- 7 mG
- Source/Device
- 40 Hz
- Exposure Duration
- 0.5 h/day for 14 days(1st group) & 1 h/day for 14 days(2nd group)
Exposure Context
This study used 7 mG for magnetic fields:
- 350Kx above the Building Biology guideline of 0.2 mG
- 70Kx above the BioInitiative Report recommendation of 1 mG
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 Details
The aim of this study was to evaluate the influence of low magnetic field on the parameters of oxidative stress in rat's muscles
Thirty male rats, weight of 280-300 g were randomly divided into three experimental groups: control ...
Exposure to ELFMF: 40 Hz, 7 mT, 30 and 60 min/day used for 2 weeks caused significant increase in -S...
Low magnetic field used in magnetotherapy causes the significant changes of the generating the reactive forms of oxygen in the muscles which depend on the parameters of low magnetic field.
Show BibTeX
@article{e_2010_influence_of_low_frequency_336,
author = {Ciejka E and Skibska B and Kleniewska P and Goraca A.},
title = {Influence of low frequency magnetic field on chosen parameters of oxidative stress in rat's muscles.},
year = {2010},
url = {https://europepmc.org/article/med/21298985},
}