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Exposure to radiation from global system for mobile communications at 1,800 MHz significantly changes gene expression in rat hippocampus and cortex.

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Nittby H, Widegren B, Krogh M, Grafström G, Berlin H, Rehn G, Eberhardt JL, Malmgren L, Persson BRR, Salford L · 2008

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Six hours of cell phone radiation significantly altered brain gene expression at exposure levels considered safe by current standards.

Plain English Summary

Summary written for general audiences

Researchers exposed rats to cell phone radiation at 1,800 MHz for 6 hours and found significant changes in brain gene activity. The genetic alterations affected genes controlling cell membranes and cellular communication in the cortex and hippocampus, the same brain regions where previous studies documented blood-brain barrier damage.

Why This Matters

This study provides molecular evidence for what the Salford research team had been documenting for years - that cell phone radiation causes measurable biological changes in the brain. The fact that gene expression patterns shifted significantly after just 6 hours of exposure at levels well within current safety limits (30 mW/kg brain SAR) should raise serious questions about our regulatory framework. What makes this research particularly compelling is that the genetic changes occurred in the exact same brain regions where these researchers had previously found blood-brain barrier leakage and neuronal damage. The science demonstrates a clear biological pathway: RF radiation alters gene expression in ways that affect cellular membranes, potentially explaining the barrier breakdown they observed. This isn't just correlation - it's a mechanistic understanding of how wireless radiation affects brain tissue at the molecular level.

Exposure Details

SAR
0.013, 0.03 W/kg
Source/Device
1,800 MHz GSM mobile test phone
Exposure Duration
6 h

Where This Falls on the Concern Scale

Study Exposure Level in ContextStudy Exposure Level in ContextThis study: 0.013, 0.03 W/kgExtreme Concern - 0.1 W/kgFCC Limit - 1.6 W/kgEffects observed in the Severe Concern rangeFCC limit is 123x higher than this level
A logarithmic frequency spectrum from 10 Hz to 100 GHz showing where this study's 1.80 GHz exposure sits relative to common EMF sources.Where This Frequency Sits on the EMF SpectrumELFVLFLF / MFHF / VHFUHFSHFmm10 Hz100 GHzThis study: 1.80 GHzPower lines50/60 Hz5G mm28 GHzLogarithmic scale

Study Details

We have now studied whether 6 h of exposure to the radiation from a GSM mobile test phone at 1,800 MHz (at a whole-body SAR-value of 13 mW/kg, corresponding to a brain SAR-value of 30 mW/kg) has an effect upon the gene expression pattern in rat brain cortex and hippocampus-areas where we have observed albumin leakage from capillaries into neurons and neuronal damage.

Microarray analysis of 31,099 rat genes, including splicing variants, was performed in cortex and hi...

Gene ontology analysis (using the gene ontology categories biological processes, molecular functions...

The fact that most of these categories are connected with membrane functions may have a relation to our earlier observation of albumin transport through brain capillaries.

Cite This Study
Nittby H, Widegren B, Krogh M, Grafström G, Berlin H, Rehn G, Eberhardt JL, Malmgren L, Persson BRR, Salford L (2008). Exposure to radiation from global system for mobile communications at 1,800 MHz significantly changes gene expression in rat hippocampus and cortex. Environmentalist 28(4), 458-465, 2008.
Show BibTeX
@article{h_2008_exposure_to_radiation_from_1228,
  author = {Nittby H and Widegren B and  Krogh M and Grafström G and Berlin H and  Rehn G and  Eberhardt JL and  Malmgren L and  Persson BRR and Salford L},
  title = {Exposure to radiation from global system for mobile communications at 1,800 MHz significantly changes gene expression in rat hippocampus and cortex.},
  year = {2008},
  doi = {10.1007/s10669-008-9170-8},
  url = {https://link.springer.com/article/10.1007/s10669-008-9170-8},
}
DOI: 10.1007/s10669-008-9170-8

Cited By (43 papers)

Quick Questions About This Study

Yes, 6-hour exposure to 1800 MHz GSM radiation significantly altered gene expression in rat brain tissue. The study found changes in genes controlling cell membranes and cellular communication in both the cortex and hippocampus, the same brain regions previously shown to experience blood-brain barrier damage.
Research shows 1800 MHz cell phone radiation significantly changes gene activity in the hippocampus after 6 hours of exposure. The affected genes primarily control membrane functions and cellular signaling, suggesting potential impacts on this critical brain region responsible for memory formation.
1800 MHz GSM radiation primarily affects genes related to extracellular regions, signal transduction, and membrane functions in brain cortex and hippocampus. These membrane-related genetic changes may explain previously observed increases in blood-brain barrier permeability from similar radiation exposures.
Just 6 hours of 1800 MHz GSM radiation exposure was sufficient to significantly alter gene expression in rat brain tissue. The study found changes in membrane-related genes in both cortex and hippocampus regions, indicating relatively rapid genetic responses to cell phone radiation.
Yes, 1800 MHz GSM radiation significantly impacts genes controlling brain cell membranes and cellular communication. After 6 hours of exposure, researchers found altered expression of membrane-related genes in both cortex and hippocampus, potentially explaining blood-brain barrier changes observed in previous studies.