Sinusoidal ELF magnetic fields affect acetylcholinesterase activity in cerebellum synaptosomal membranes.

This study provides direct evidence that power-frequency magnetic fields can disrupt brain biochemistry at the cellular level. The researchers found that exposure to 50 Hz magnetic fields at 0.74 mT reduced acetylcholinesterase activity by 27%. Put simply, this enzyme is responsible for clearing acetylcholine from nerve synapses after it delivers its message. When this cleanup process is impaired, acetylcholine accumulates, potentially disrupting normal brain function.

What makes this research particularly significant is the exposure level tested. At 0.74 mT (740 milligauss), this is well within the range of magnetic fields you might encounter near power lines, electrical panels, or some household appliances. The science demonstrates that even brief exposures at these levels can measurably alter brain enzyme function. While the effects were reversible in this laboratory study, the implications for chronic exposure in real-world settings deserve serious consideration, especially given acetylcholine's critical role in memory, learning, and neurological development.