Permeability of the blood-brain barrier induced by 915 MHz electromagnetic radiation, continuous wave and modulated at 8, 16, 50, and 200 Hz.
Salford LG, Brun A, Sturesson K, Eberhardt JL, Persson BRq · 1994
View Original AbstractMicrowave radiation at cell phone frequencies caused blood-brain barrier leakage in 30% of exposed animals versus 8% of controls.
Plain English Summary
Swedish researchers exposed rats to 915 MHz microwave radiation for two hours and found it caused the blood-brain barrier to leak. This protective barrier normally keeps harmful substances out of the brain. The finding suggests microwave radiation can compromise the brain's natural defenses.
Why This Matters
This landmark 1994 study from Lund University provides compelling evidence that radiofrequency radiation can breach the blood-brain barrier, your brain's primary defense against toxins and pathogens. The researchers found significant barrier leakage at exposure levels as low as 0.016 W/kg - well below current safety limits and comparable to what you might experience during a long cell phone call. What makes this research particularly significant is that it demonstrates a clear biological mechanism by which EMF could potentially cause neurological harm. The blood-brain barrier exists for a reason: when it's compromised, substances that should never reach brain tissue can cross over and potentially cause inflammation or damage. While this study used rats, the consistency of blood-brain barrier function across mammalian species makes these findings highly relevant to human health.
Exposure Details
- SAR
- 0.016 and 5 W/kg
- Source/Device
- 915 MHz
- Exposure Duration
- 2h
Where This Falls on the Concern Scale
Study Details
In the present investigation we exposed male and female Fischer 344 rats in a transverse electromagnetic transmission line chamber to microwaves of 915 MHz as continuous wave (CW) and pulse-modulated with repetition rates of 8, 16, 50, and 200 s-1.
The specific energy absorption rate (SAR) varied between 0.016 and 5 W/kg. The rats were not anesthe...
The results show albumin leakage in 5 of 62 of the controls and in 56 of 184 of the animals exposed ...
Show BibTeX
@article{lg_1994_permeability_of_the_bloodbrain_1304,
author = {Salford LG and Brun A and Sturesson K and Eberhardt JL and Persson BRq},
title = {Permeability of the blood-brain barrier induced by 915 MHz electromagnetic radiation, continuous wave and modulated at 8, 16, 50, and 200 Hz. },
year = {1994},
url = {https://pubmed.ncbi.nlm.nih.gov/8012056/},
}