❓ FAQ · January 2026
Electromagnetic Waves:
13 Key Questions
What is SAR? Is 5G more dangerous than 4G? How to protect yourself effectively? 13 essential questions with factual answers sourced from WHO, ANSES, and ANFR.
Sources: ANSESWHOICNIRPANFRIARCFrench National Academy of Medicine
Questions about electromagnetic waves are numerous, and answers often contradict each other depending on the source. This guide centralizes factual answers based on official bodies and peer-reviewed scientific studies.
📋 Sources for this FAQ
- WHO — World Health Organization
- ANSES — French Agency for Food, Environmental and Occupational Health & Safety
- ANFR — National Frequencies Agency (France)
- ICNIRP — International Commission on Non-Ionizing Radiation Protection
- IARC — International Agency for Research on Cancer
Fundamentals
❓ Questions 01–03: Understanding waves
Q01 · What is an electromagnetic wave?
An electromagnetic wave is a coupled oscillation of an electric field and a magnetic field that propagates through space at the speed of light. It carries energy without requiring a material medium. Radio waves, WiFi, mobile telephony, visible light, UV, and X-rays are all electromagnetic waves — differentiated by their frequency and thus their energy.
Q02 · What is the difference between ionizing and non-ionizing waves?
Ionizing radiation (UV, X-rays, gamma rays) has enough energy to break chemical bonds of molecules, including DNA — hence its proven carcinogenic nature. Non-ionizing waves (WiFi, 4G, 5G, Bluetooth) do not have this capacity. This is the fundamental distinction. This does not mean that non-ionizing waves are without biological effect, but that their mode of action is different.
Q03 · What is SAR (Specific Absorption Rate)?
SAR measures the amount of electromagnetic energy absorbed by one kilogram of biological tissue, expressed in W/kg. It is the main regulatory indicator. In France, the legal limit is 2 W/kg for the head and trunk, and 4 W/kg for the limbs. Phonegate revealed that many smartphones exceeded these limits during tests under real-world usage conditions.
Health & Risks
❓ Questions 04–07: Health effects
Q04 · Can WiFi and mobile waves cause cancer?
IARC/WHO classified radiofrequency electromagnetic fields as Group 2B: "Possibly carcinogenic" since 2011 — a classification that has been maintained. This means a possible association has been observed, but evidence is insufficient for a definitive causal link. The US NTP program (2018) found an association between RF and cardiac tumors in male rats exposed to high doses.
Q05 · What is electrohypersensitivity (EHS)?
EHS refers to a set of symptoms (headaches, fatigue, sleep disturbances, difficulty concentrating) that affected individuals attribute to their exposure to electromagnetic fields. ANSES estimates that between 3% and 8% of the French population could be affected. The symptoms are real; the direct causal link with EMFs remains scientifically debated.
Q06 · Are children more vulnerable than adults?
Yes — this is recognized by ANSES and WHO. A child's brain absorbs up to twice as much electromagnetic energy as an adult brain (thinner skull, more conductive tissues). ANSES explicitly recommends limiting children's exposure to radiofrequencies and applying a reinforced precautionary principle for children under 6.
Q07 · Do waves disturb sleep?
Studies show that exposure to electromagnetic fields can reduce melatonin secretion by the pineal gland — the hormone regulating the sleep-wake cycle. Disturbances in nocturnal EEG have also been documented. This is why turning off WiFi at night and putting the phone in airplane mode are recommended actions.
Protecting Yourself
❓ Questions 08–10: Effective protection
Q08 · What are the most effective protective measures?
1) Systematically use wired hands-free kits for calls (90-99% reduction in cerebral exposure). 2) Airplane mode on smartphone at night. 3) WiFi off at night via a programmable outlet. 4) Ethernet cable rather than WiFi for the computer. 5) Distance: tablet/laptop on a table, never on your lap. These 5 actions cover most daily exposure.
Q09 · Are anti-wave devices effective?
This entirely depends on the device. "Anti-wave" stickers, patches, and cards without independent testing are generally without proven effect. Wave Protect France devices are tested by the independent, accredited NEXIO laboratory on 4G and 5G frequencies. Measured reduction results are published and available for download. European patent EP2814564 attests to the technology.
Q10 · How can I measure exposure in my home?
ANFR offers free measurements for exposure related to external cell towers (anfr.fr). For indoor exposure (WiFi, devices), a portable electromagnetic field detector (50-150€) can identify the most exposed areas. A professional audit by a specialized technician (200-500€) provides a complete diagnosis.
Home & Regulation
❓ Questions 11–13: Legal framework and connected home
Q11 · What does the Abeille Law (2015) stipulate?
The Abeille Law (Law of February 9, 2015) mandates: 1) WiFi must be turned off in areas dedicated to children under 3. 2) In primary schools, WiFi must be able to be deactivated when not used for pedagogical purposes. 3) Information on exposure must be accessible. It also establishes the principle of moderation for waves.
Q12 · Does the Linky meter emit dangerous waves?
The Linky meter emits power line communication (PLC) at 50-90 kHz — a transmission technology via the electrical network, not through the air. These very low frequencies are different from cellphone RF. ANSES concluded in 2017 that there was no evidence of health effects, while recommending additional studies. PLC filters exist for people who wish to reduce these emissions.
Q13 · Is 5G more dangerous than 4G?
5G uses higher frequencies (3.5 GHz mainly in France) but with emission power regulated comparably to 4G. ANSES specifically requested additional studies on the long-term effects of 5G. The greater scientific uncertainty for 5G justifies applying the precautionary principle.
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Updated: January 2026 · Sources: WHO/IARC 2011, ANSES 2021, ICNIRP, ANFR, French National Academy of Medicine, Abeille Law 2015, Operators Transparency Decree 2013 · Author: Wave Protect France Team
Wave Protect France — 5 ter rue de la Gaucherie, 18100 Vierzon — contact@wave-protect.fr
This article is for informational and educational purposes. It is not a substitute for medical advice.
Wave Protect France — 5 ter rue de la Gaucherie, 18100 Vierzon — contact@wave-protect.fr
This article is for informational and educational purposes. It is not a substitute for medical advice.
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