# Non-thermal effect

> A proposed biological effect at exposure levels too low to cause measurable heating; the central claim of precautionary guidelines and the central objection of regulators.

- Canonical URL: https://emfbase.com/glossary/non-thermal-effect
- Collection: Glossary
- Record id: `glossary:non-thermal-effect`
- Status: verified
- Last verified: 2026-08-12
- JSON: https://emfbase.com/api/glossary/non-thermal-effect

## Key values

- **Category:** health

## Definition

Non-thermal effects are biological responses proposed to occur below the heating threshold, for example via oxidative stress or voltage-gated calcium channels. ICNIRP's position is that no such effect has been established with sufficient consistency to base limits on. Precautionary frameworks such as BioInitiative and EUROPAEM assume they exist and propose targets orders of magnitude lower. This site records both positions and labels which is which.

## Sources

- `icnirp-2020` International Commission on Non-Ionizing Radiation Protection (2020). *Guidelines for Limiting Exposure to Electromagnetic Fields (100 kHz to 300 GHz)*. https://www.icnirp.org/en/publications/article/rf-guidelines-2020.html — guideline, link checked 2026-08-12
- `bioinitiative-2012` BioInitiative Working Group (2012). *BioInitiative Report 2012 (updated) — conclusions and recommended precautionary levels*. https://bioinitiative.org/conclusions/ — ngo, link checked 2026-08-12
- `europaem-2016` European Academy for Environmental Medicine (2016). *EUROPAEM EMF Guideline 2016 for the prevention, diagnosis and treatment of EMF-related health problems*. https://europaem.eu/en/library/blog-en/97-europaem-emf-guideline-2016 — ngo, link checked 2026-08-12

Data licence: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Dataset version 2026.08.1. Retrieved from EMFBase, https://emfbase.com.

This record is reference data, not medical or legal advice. Regulatory limits, scientific guidelines and precautionary values are labelled separately and answer different questions.