Changes in numbers and size of synaptic vesicles of cortical neurons induced by exposure to 835 MHz radiofrequency-electromagnetic field.
Kim JH, Kim HJ, Yu DH, Kweon HS, Huh YH, Kim HR. · 2017
View Original AbstractCell phone-frequency radiation reduced brain communication structures in mice at exposure levels achievable during everyday device use.
Plain English Summary
Korean researchers exposed mice to cell phone-frequency radiation (835 MHz) for 5 hours daily and examined changes in brain cells. They found that this exposure significantly reduced the number of synaptic vesicles (tiny containers that store brain chemicals) and decreased levels of proteins needed for proper brain communication. These changes suggest that radiofrequency radiation may disrupt how brain cells communicate with each other.
Why This Matters
This study provides compelling evidence that radiofrequency radiation can alter fundamental brain structures at the cellular level. The researchers used a 4.0 W/kg SAR exposure level, which is four times higher than the current FCC limit for cell phones (1.6 W/kg), but well within the range that could occur during prolonged phone calls or when devices are used close to the body. What makes this research particularly significant is that it examined synaptic vesicles and synapsin proteins, which are critical for neurotransmitter release and brain communication. The science demonstrates that RF-EMF exposure can reduce both the number of these vesicles and the proteins that regulate them, potentially affecting cognitive function and neural signaling. This adds to a growing body of research showing that wireless radiation affects brain structure and function, challenging the industry's position that non-thermal effects don't exist.
Exposure Details
- SAR
- 4 W/kg
- Source/Device
- 835 MHz
- Exposure Duration
- 5 h daily
Exposure Context
This study used 4 W/kg for SAR (device absorption):
- 10x above the Building Biology guideline of 0.4 W/kg
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
We studied the effects of radiofrequency electromagnetic fields (RF-EMFs) exposure on neuronal functions of mice.
we focused on RF-EMF effects on synaptic vesicles (SVs), which store neurotransmitters at axon termi...
The density of the SVs (number /10 μm2 or 40 μm3) was significantly decreased in the presynaptic bou...
The present study suggested that alteration of SVs and Syn levels may result in alterations of neurotransmitters in the cerebral cortex following RF-EMF exposure.
Show BibTeX
@article{jh_2017_changes_in_numbers_and_1102,
author = {Kim JH and Kim HJ and Yu DH and Kweon HS and Huh YH and Kim HR.},
title = {Changes in numbers and size of synaptic vesicles of cortical neurons induced by exposure to 835 MHz radiofrequency-electromagnetic field.},
year = {2017},
url = {https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0186416},
}