5G Radio-Frequency-Electromagnetic-Field Effects on the Human Sleep Electroencephalogram: A Randomized Controlled Study in CACNA1C Genotyped Volunteers

Abstract

Overview

The adoption of 5G technology in mobile communications has generated concerns over its health implications. Previous research on earlier RF-EMF generations noted increases in electroencephalographic (EEG) spindle frequency in non-rapid-eye-movement (NREM) sleep, but the impact of 5G RF-EMF is not well understood. Notably, these fields may activate L-type voltage-gated calcium channels (LTCC), which are linked to both sleep regulation and EEG patterns.

Objective

This study examines whether a genetic variant (rs7304986) in the CACNA1C gene—which encodes the a1C subunit of LTCC—affects individual sensitivity to 5G RF-EMF on sleep spindle activity during NREM sleep.

Methods

• 34 volunteers, genotyped for rs7304986 (15 T/C and 19 matched T/T carriers)
• Double-blind, sham-controlled exposure to two 5G RF-EMF signals (3.6 GHz and 700 MHz) for 30 minutes before sleep
• Sleep spindle activity monitored using high-density EEG and the FOOOF algorithm

Findings

• T/C genotype carriers experienced longer sleep latency than T/T carriers
• Significant interaction between RF-EMF exposure and CACNA1C genotype found
• Exposure to 3.6 GHz in T/C carriers led to a faster spindle center frequency in central, parietal, and occipital regions of the brain, compared to sham

Conclusion

Exposure to 3.6 GHz 5G RF-EMF alters spindle center frequency during NREM sleep in a manner dependent on CACNA1C genotype, with particular sensitivity for T/C carriers. This implicates LTCC involvement in physiological responses to RF-EMF, emphasizing the necessity for sustained research on how 5G exposure might affect brain health. This study demonstrates that health risks from electromagnetic fields, especially in genetically susceptible populations, merit close consideration.