Gaps in Knowledge Relevant to the "ICNIRP Guidelines for Limiting Exposure to Time-Varying Electric, Magnetic and Electromagnetic Fields (100 kHz TO 300 GHz)"

Authors: International Commission on Non-Ionizing Radiation Protection (ICNIRP)

Year: 2025 Feb 1

Category: Public Health, Radiation Safety

Journal: Health Physics

Institution: International Commission on Non-Ionizing Radiation Protection (ICNIRP)

DOI: 10.1097/HP.0000000000001944

URL: https://journals.lww.com/health-physics/fulltext/2025/02000/gaps_in_knowledge_relevant_to_the_icnirp.8.aspx

Abstract

Overview

In the last 30 years, both observational and experimental studies have explored the possible health effects of exposure to radiofrequency electromagnetic fields (EMF) and investigated potential mechanisms of interaction. The International Commission on Non-Ionizing Radiation Protection (ICNIRP) primarily aims to protect people and the environment from negative exposure to non-ionizing radiation (NIR), offering guidance based on scientific research across the electromagnetic spectrum.

Research Focus

During the formulation of ICNIRP's 2020 radiofrequency EMF guidelines, certain gaps in available research data were identified. These gaps, documented in this Statement, highlight crucial knowledge areas that, if addressed, could further refine guidelines and improve recommendations for limiting EMF exposure between 100 kHz and 300 GHz.

Identified Data Gaps

  • Relations between radiofrequency EMF exposure and heat-induced pain
  • Clarification of the connection between whole-body exposure and core temperature rise (100 kHz to 300 GHz), influenced by exposure duration and concurrent EMF sources
  • Thresholds for adverse effects and thermal dosimetry in various ocular structures
  • Pain thresholds for contact currents under diverse exposure scenarios, including linked dosimetry
  • Additional dosimetry studies to bolster future research and improve the application of EMF exposure limits in upcoming guidelines

Conclusion

It is important to stress that several relevant research areas were excluded from this gap analysis if either the exposure-health endpoint link was not sufficiently substantiated by current literature. However, the presence of these priority gaps emphasizes that there remain uncertainties concerning the links between EMF exposure and adverse health outcomes, particularly regarding thermal and pain effects. Addressing these data gaps is crucial to strengthening EMF safety standards and reducing uncertainty about health risks associated with EMF exposure.

ICNIRP EMF exposure knowledge gaps guideline development thermal effects dosimetry health risk
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