Is WiFi Radiation Harmful? What Health Agencies Report

Is WiFi Radiation Harmful? The Short Answer

UKHSA found 'no consistent evidence that exposure to radio signals from Wi-Fi devices adversely affects the health of the general population'. ARPANSA states 'There is no established scientific evidence that the low exposure to RF EME from Wi-fi adversely affects the health of children or the general population'. Health Canada reports Wi-Fi measurements far below its Safety Code 6 limits. UKHSA gives the same typical 0.1 watt for the user device as for the router.

UKHSA refers to guidelines from the International Commission on Non-Ionizing Radiation Protection (ICNIRP). UKHSA notes that exposures from Wi-Fi are likely lower than exposures from mobile phones used for voice calls.

What WiFi Radiation Is

UKHSA says Wi-Fi devices operate in radio-frequency bands near 2.4, 5 and 6 gigahertz. UKHSA states 'The signals are very low power, typically 0.1 watt (100 milliwatts), in both the user device and the router (access point)'. ARPANSA states 'Wi-fi devices and access points are low powered, typically 0.1 watt (100 milliwatts)'. Health Canada describes the radiofrequency energy from Wi-Fi as 'a type of non-ionizing radiation'.

The Federal Communications Commission (FCC) says in its RF safety FAQ that energy levels of RF and microwave radiation 'are not great enough to cause the ionization of atoms and molecules'. Non-ionizing radiation includes visible and infrared light.

How Much Exposure You Get at Home

ARPANSA notes that exposure to radiofrequency electromagnetic energy reduces very rapidly with distance. When a router sits 10 to 20 cm or more from the body, ARPANSA reports exposures far less than the limits. The Wi-Fi transmitter closest to your body is usually your own laptop, phone, or tablet. UKHSA gives the same typical 0.1 watt for the device and the router. Distance to the device in your hands therefore matters more than router placement.

ARPANSA measured Wi-Fi exposure in schools and found it much lower than the public exposure limit.

UKHSA reports that Wi-Fi exposures are small in relation to ICNIRP guidelines. Health Canada also reports Wi-Fi measurements far below Safety Code 6 limits. UKHSA says Wi-Fi exposure is likely lower than from mobile phones used for voice calls 'because their antennas tend to be further away from the body during normal use'. The wearable EMF comparison covers Oura, Whoop, and Apple Watch trackers.

WiFi Radiation in Pregnancy and Around Babies and Children

None of the health-agency pages reviewed here addresses Wi-Fi in pregnancy specifically. None of the agency pages reviewed addresses infants or babies specifically. ARPANSA states 'There is no established scientific evidence that the low exposure to RF EME from Wi-fi adversely affects the health of children or the general population'.

The World Health Organization (WHO) maintains an older, undated questions and answers page on electromagnetic fields. That WHO resource covers electromagnetic fields in general. It does not cover Wi-Fi specifically. WHO states 'The overall weight of evidence shows that exposure to fields at typical environmental levels does not increase the risk of any adverse outcome such as spontaneous abortions, malformations, low birth weight, and congenital diseases.'

A WHO-commissioned systematic review in non-human mammals appeared in Environment International on August 30, 2023. Germany's Federal Office for Radiation Protection (BfS) summarized this animal research. The animal review found 'No reliable evidence' that mobile-phone EMF influences female fertility or has a negative effect on offspring. The authors noted the fields 'may, however, slightly reduce foetal weight'. BfS describes those experimental animal exposures as 'considerably higher than in everyday life'. The reproductive health guide covers EMF, testosterone, and sperm.

Does WiFi Radiation Cause Cancer?

The International Agency for Research on Cancer (IARC) classified radiofrequency electromagnetic fields as possibly carcinogenic to humans (Group 2B) in 2011, on limited evidence from wireless phone use. That classification concerned mobile phones. It did not concern Wi-Fi routers. IARC described the evidence as 'credible, but chance, bias and confounding cannot be ruled out'.

UKHSA provides a general statement on population exposure. UKHSA found 'no consistent evidence that exposure to radio signals from Wi-Fi devices adversely affects the health of the general population'. The 5G health effects guide covers the HHS review.

Ways to Reduce Exposure If You Want To

You can reduce exposure to Wi-Fi equipment by increasing physical distance, shortening usage time, or using a wired Ethernet connection. UKHSA concludes that 'no additional action is necessary communally or individually to reduce exposure further'. ARPANSA lists ways to reduce exposure, including 'increasing the distance to wi-fi equipment' and 'reducing the amount of time you use wi-fi equipment'.

ARPANSA says exposure 'reduces very rapidly with distance'. Turning Wi-Fi off on a device or router stops that Wi-Fi transmission. A wired Ethernet connection carries digital data without a radio signal. For protective products and meters, see the guide on whether EMF blockers work.

A WHO-commissioned review of human experimental studies found no or small non-significant effects of radiofrequency exposure on symptoms, including sleep disturbances. The sleep guide covers EMF and sleep research in full. The sensitivity guide covers EMF sensitivity symptoms.