Abstract

Overview

The study aimed to investigate the biological effects of occupational exposure to extremely low-frequency electromagnetic fields (ELF-EMF) on the thyroid gland of workers.

Methods

• A prospective analysis involving 85 workers from an electromagnetic aircraft launch system was conducted.
• These workers were exposed to ELF-EMF (100 μT, 10-100 Hz) and compared to 116 healthy volunteers over three years.

Findings

The study found no significant changes in thyroid function, immunological indices, and color Doppler images when compared to the control group. However, there was a noted decrease in free triiodothyronine (FT3) and an increase in free thyroxine (FT4) levels over time with increased exposure.

Conclusion

Long-term ELF-EMF exposure might influence thyroid hormone secretion and deiodination processes but does not significantly affect thyroid immune function or morphology. Concerns about ELF-EMF’s role in thyroid functionality and potential health risks remain, emphasizing the need for ongoing research in this area.