Abstract

Overview

This study evaluates the effects of GSM-1800 and UMTS-1950 mobile communication radiofrequency signals on blood-brain barrier (BBB) permeability and neuron degeneration in rats.

Methodology

• Assessment conducted through single 2-hour exposure and repeated exposures (2 hours/day for 4 weeks).
• Specific absorption rates (BASAR) tested were 0.026, 0.26, 2.6, and 13 W/kg.

Findings

No adverse impacts on BBB leakage or neuron degeneration were observed immediately following single or repeated exposures, except for a transient BBB leakage at 0.26 W/kg after UMTS signal exposure. Notably:

• Increased BBB permeability detected 50 days after repeated exposures at higher BASAR levels (13 W/kg).
• At 13 W/kg, GSM exposure led to a threefold increase in BBB permeability, significantly higher than other tested levels.

Conclusion

The study indicates potential health risks associated with high levels of RF exposure due to delayed effects that increase BBB permeability. Protective measures and further investigations are suggested to evaluate risks at lower exposure levels that might also affect human health.