Two new peer-reviewed studies published in early 2025 add fresh evidence to long-standing concerns about the biological effects of man-made electromagnetic fields (EMFs). These studies address both extremely low frequency (ELF) EMFs from sources like power lines and appliances, and radiofrequency (RF) EMFs from Wi-Fi, mobile phones, and other wireless technologies.
Study 1: Long-Term ELF-EMF Exposure Damages the Brain
A February 2025 study in Free Radical Biology and Medicine examined how long-term ELF-EMF exposure (50 Hz, 1 millitesla) affected rats’ brain function. The animals were exposed for one hour per day over a 120-day period.
Key findings:
- Significant increase in oxidative stress markers in the hippocampus
- Decrease in antioxidant enzymes such as superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx)
- Impaired ability of the brain to neutralise reactive oxygen species
- Likely long-term impact on memory and cognitive performance
This research highlights how chronic exposure to ELF-EMFs may accelerate brain ageing or neurodegeneration through oxidative pathways.
Read the full study: www.sciencedirect.com/science/article/pii/S0891584924000436
Study 2: Wi-Fi Radiation Alters Brain Development in Mice
Another 2025 study, published in Environmental Research, focused on the effects of prenatal and early postnatal exposure to RF-EMFs at 2.45 GHz—commonly emitted by Wi-Fi routers. Mice were exposed for eight hours per day during gestation and early life.
Key findings:
- Offspring showed impaired spatial learning and memory
- Brain tissue displayed increased markers of inflammation and oxidative stress
- Reduced neurogenesis (formation of new neurons) in the hippocampus
- Evidence of lasting changes in brain structure and function
The results raise red flags about early-life RF-EMF exposure during critical periods of brain development.
Read the full study: www.sciencedirect.com/science/article/pii/S0013935124000973
Conclusion
Both studies reinforce a growing consensus that man-made EMFs—whether from electrical infrastructure or wireless communication—can have significant biological effects, particularly on the brain. The common mechanisms appear to be oxidative stress, inflammation, and impaired cellular repair, all of which may lead to cognitive decline or developmental issues over time.
These findings warrant serious consideration by regulators, educators, and anyone concerned about long-term EMF exposure—especially in children and vulnerable groups.