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Oxidative Stress

Effect of selenium pre-treatment on plasma antioxidant vitamins A (retinol) and E (α-tocopherol) in static magnetic field-exposed rats

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Ghodbane S, Amara S, Arnaud J, Garrel C, Faure H, Favier A, Sakly M, Abdelmelek H · 2011

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Static magnetic field exposure significantly depleted protective antioxidant vitamins in rats, but selenium supplementation prevented this cellular damage.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to static magnetic fields (128 mT) for one hour daily over five days and found significant depletion of antioxidant vitamins A and E in the blood, indicating oxidative stress. However, when rats were pre-treated with selenium supplements for 30 days, these harmful effects were prevented. This suggests that magnetic field exposure can overwhelm the body's natural antioxidant defenses, but proper nutrition may offer protection.

Why This Matters

This study adds important evidence to our understanding of how magnetic fields affect cellular health at the biochemical level. The 128 mT exposure used here is considerably stronger than typical household sources (which range from 0.1-1 mT near appliances), but it's comparable to what you might encounter near MRI machines or certain industrial equipment. What makes this research particularly valuable is that it demonstrates both harm and protection - showing that magnetic fields can deplete critical antioxidant vitamins that protect our cells from damage, while also revealing that selenium supplementation can counteract these effects. The reality is that oxidative stress underlies many chronic diseases, from cardiovascular problems to premature aging. While we can't always avoid EMF exposure in our modern world, studies like this suggest that supporting our body's antioxidant systems through proper nutrition may be one practical strategy for protection.

Exposure Details

Magnetic Field
128 mG
Exposure Duration
1 h/day during 5 consecutive days

Exposure Context

This study used 128 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: 128 mGExtreme Concern - 5 mGFCC Limit - 2,000 mGEffects observed in the Extreme Concern rangeFCC limit is 16x higher than this level

Study Details

In the present study, we evaluate the effect of the co-exposure to static magnetic field (SMF) and selenium (Se) on the antioxidant vitamins A and E levels and some other parameters of oxidative stress in rat.

Sub-acute exposure of male adult rats to a uniform SMF (128 mT, 1 h/day during 5 consecutive days) i...

Our investigation demonstrated that sub-acute exposure to SMF induced oxidative stress, which may be prevented by a pretreatment with selenium.

Cite This Study
Ghodbane S, Amara S, Arnaud J, Garrel C, Faure H, Favier A, Sakly M, Abdelmelek H (2011). Effect of selenium pre-treatment on plasma antioxidant vitamins A (retinol) and E (α-tocopherol) in static magnetic field-exposed rats Toxicol Ind Health. 27(10):949-955, 2011a.
Show BibTeX
@article{s_2011_effect_of_selenium_pretreatment_370,
  author = {Ghodbane S and Amara S and Arnaud J and Garrel C and Faure H and Favier A and Sakly M and Abdelmelek H},
  title = {Effect of selenium pre-treatment on plasma antioxidant vitamins A (retinol) and E (α-tocopherol) in static magnetic field-exposed rats},
  year = {2011},
  doi = {10.1177/0748233711401261},
  url = {https://journals.sagepub.com/doi/abs/10.1177/0748233711401261},
}
DOI: 10.1177/0748233711401261

Cited By (12 papers)

Quick Questions About This Study

Yes, magnetic field exposure can cause oxidative stress. A 2011 study found that rats exposed to static magnetic fields for five days showed significant depletion of antioxidant vitamins A and E in their blood, indicating the body's natural defenses were overwhelmed by oxidative damage.
Research shows magnetic field exposure can significantly reduce vitamin levels. Rats exposed to static magnetic fields experienced a 67% decrease in vitamin E and 41% decrease in vitamin A levels, suggesting magnetic fields may interfere with the body's antioxidant vitamin stores.
Yes, selenium supplementation appears to provide protection against magnetic field effects. When rats received selenium supplements for 30 days before magnetic field exposure, the harmful depletion of antioxidant vitamins was prevented, suggesting selenium strengthens cellular defenses against electromagnetic stress.
Static magnetic field exposure may increase oxidative stress in the body by depleting protective antioxidant vitamins. Research found significant reductions in vitamins A and E after just five days of exposure, though proper nutrition with selenium may help counteract these effects.
Magnetic fields can overwhelm the body's antioxidant defense systems. Studies show exposure increases certain antioxidant enzyme activity by 35% while simultaneously depleting key antioxidant vitamins by up to 67%, indicating the body struggles to maintain protective balance during electromagnetic exposure.