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Brain & Nervous System

Short-term effects of extremely low frequency electromagnetic fields exposure on Alzheimer's disease in rats.

No Effects Found

Zhang Y, Liu X, Zhang J, Li N. · 2015

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Twelve weeks of power-line frequency EMF exposure showed no memory impairment or Alzheimer's markers in rats at 100 microtesla levels.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to extremely low frequency electromagnetic fields (the type emitted by power lines and electrical devices) for 12 weeks to see if it would affect memory and brain health, particularly markers associated with Alzheimer's disease. They found no changes in the rats' memory performance, brain tissue structure, or levels of amyloid-beta proteins that are linked to Alzheimer's. This suggests that short-term exposure to these fields at the levels tested did not harm cognitive function in this animal model.

Exposure Information

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

The study examined exposure from: 50 Hz

Study Details

The objective of the present study was to investigate the interaction between ELF-EMF exposure and memory impairment in rats.

Twenty healthy male Sprague Dawley (SD) rats were randomly divided into two groups (n = 10). Animals...

After exposure, the body weight of rats showed no difference compared with the control group. The ap...

The present study indicated that short-term exposure of 100 μT/50 Hz ELF-EMF had no effects on cognition and memory of rats, and did not alter the expression of Aβ and the neuron morphology. However, more comprehensive studies are still required to elucidate the possible effects and underlying mechanisms of ELF-EMF exposure on living organisms.

Cite This Study
Zhang Y, Liu X, Zhang J, Li N. (2015). Short-term effects of extremely low frequency electromagnetic fields exposure on Alzheimer's disease in rats. Int J Radiat Biol. 91(1):28-34, 2015.
Show BibTeX
@article{y_2015_shortterm_effects_of_extremely_2908,
  author = {Zhang Y and Liu X and Zhang J and Li N.},
  title = {Short-term effects of extremely low frequency electromagnetic fields exposure on Alzheimer's disease in rats.},
  year = {2015},
  
  url = {https://pubmed.ncbi.nlm.nih.gov/25118893/},
}
PubMed: 25118893

Cited By (41 papers)

Quick Questions About This Study

A 2015 study found that 12 weeks of 50 Hz electromagnetic field exposure at 100 μT had no effect on Alzheimer's markers in rats. The researchers detected no changes in memory performance, amyloid-beta proteins, or brain tissue structure compared to unexposed control groups.
Research shows that 100 μT extremely low frequency electromagnetic field exposure for 12 weeks did not impair cognitive function or memory in rats. The exposed rats performed equally well on memory tests as the control group with no measurable differences.
A 12-week study exposed rats to 50 Hz electromagnetic fields at 100 μT without causing brain damage. Researchers found no changes in neuron structure, amyloid-beta protein levels, or cognitive function compared to unexposed rats during this timeframe.
Power line frequency EMF exposure (50 Hz at 100 μT) for 12 weeks did not alter amyloid-beta protein levels in rat brains. These proteins are key markers of Alzheimer's disease, suggesting short-term exposure doesn't trigger Alzheimer's-related brain changes.
Rats exposed to 100 μT extremely low frequency electromagnetic fields for 12 weeks showed no difference in body weight compared to control groups. This indicates the EMF exposure didn't cause observable physical stress or metabolic changes in the animals.