THE USE OF MICROWAVE HEATING TO INACTIVATE CHOLINESTERASE IN THE RAT BRAIN PRIOR TO ANALYSIS FOR ACETYLCHOLINE
W. B. STAVINOHA, S. T. WEINTRAUB, A. T. MODAK · 1973
2450 MHz microwaves altered brain chemistry within seconds, the same frequency now used by WiFi and Bluetooth devices.
Plain English Summary
Researchers used 2450 MHz microwave radiation to instantly kill laboratory rats and mice while preserving brain chemistry for analysis. The microwave method preserved nearly twice as much acetylcholine (a critical brain chemical) compared to standard killing methods. This 1973 study demonstrates that microwave radiation can rapidly penetrate the entire brain and alter biological processes within seconds.
Why This Matters
This early research reveals something troubling about microwave radiation's ability to penetrate biological tissue. The fact that 2450 MHz microwaves could instantly inactivate enzymes throughout the entire brain in just 2-4 seconds shows how effectively this frequency penetrates neural tissue. What makes this particularly relevant today is that 2450 MHz is the exact frequency used by WiFi routers, Bluetooth devices, and microwave ovens in your home.
While the study focused on using microwaves as a research tool, it inadvertently demonstrated the biological potency of the same frequency that now surrounds us daily. The dramatic difference in brain chemistry between microwave-killed and conventionally-killed animals suggests that even brief microwave exposure can alter fundamental biological processes. This raises important questions about what chronic, lower-level exposure to these same frequencies might be doing to our brains over time.
Finding
Uniform inactivation of cholinesterase (EC 3.1.1.8) in the entire brain can be effected in the rat within 4s and in the mouse within 2 s without destruction of acetylcholine. The acetylcholine content in the whole brain of a rat was found to be 25-4 + 1-5 nmol/g after irradiation, in comparison to 13:8 + 1-7 nmol/g after standard methods of sacrifice. In the mouse whole brain, the comparable acetylcholine contents were 25:5 + 2:6 and 13-7 + 1:7 nmol/g, respectively.
In their words
“Uniform inactivation of cholinesterase (EC 3.1.1.8) in the entire brain can be effected in the rat within 4s and in the mouse within 2 s without destruction of acetylcholine. The acetylcholine content in the whole brain of a rat was found to be 25-4 + 1-5 nmol/g after irradiation, in comparison to 13:8 + 1-7 nmol/g after standard methods of sacrifice. In the mouse whole brain, the comparable acetylcholine contents were 25:5 + 2:6 and 13-7 + 1:7 nmol/g, respectively.”
Figures from the Original Paper
Diagrams extracted from the original research document.
Exposure Information
Specific exposure levels were not quantified in this study.
Show BibTeX
@article{the_use_of_microwave_heating_to_inactivate_cholinesterase_in_the_rat_brain_prior_g6893,
author = {W. B. STAVINOHA and S. T. WEINTRAUB and A. T. MODAK},
title = {THE USE OF MICROWAVE HEATING TO INACTIVATE CHOLINESTERASE IN THE RAT BRAIN PRIOR TO ANALYSIS FOR ACETYLCHOLINE},
year = {1973},
}