Effect of Occupational Extremely Low-Frequency Electromagnetic Field Exposure on the Thyroid Gland of Workers: A Prospective Study

Authors: Fang YY, Tu Q, Zhang YT, Liu J, Liu HG, Zhao ZH, Wu H, Yin TJ

Year: 2022 Aug

Category: Occupational Health

Journal: Curr Med Sci

Institution: Curr Med Sci

DOI: 10.1007/s11596-022-2610-8

URL: https://pubmed.ncbi.nlm.nih.gov/35963949/

Abstract

Overview

The study conducted a prospective analysis focusing on the biological effects of occupational exposure to extremely low-frequency electromagnetic fields (ELF-EMF) on the thyroid gland.

Methods

  • Research included 85 workers exposed to ELF-EMF (100 μT, 10-100 Hz) from the electromagnetic aircraft launch system.
  • Follow-up conducted over three years monitored thyroid function indices, immunological indices, and color Doppler images.
  • A control group of 116 healthy volunteers was also assessed for comparative analysis.

Findings

Throughout the follow-up:

  • No significant differences in thyroid function between the exposed and control groups.
  • Slight variations observed in levels of free triiodothyronine (FT3) and free thyroxine (FT4), but not in thyroid-stimulating hormone (TSH).
  • No significant changes in thyroid autoantibody levels or ultrasound images.

Conclusion

Long-term exposure to ELF-EMF may influence thyroid function subtly by altering T4 and T3 secretion but does not significantly affect thyroid immune function or morphology, caution is advised in interpreting these findings considering potential health risks.

ELF-EMF exposure thyroid gland occupational health electromagnetic fields prospective study
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