“5G and Wi-Fi cause health problems.”
Everyday 5G and Wi-Fi signals have not been shown to cause health problems in people.
Using Wi-Fi and 5G devices in everyday life is not a proven health risk, and you do not need shields or "EMF protection" products. Symptoms you feel are real and worth checking with a clinician, who can look for common, treatable causes.
Keep using your devices normally, and put the money you might spend on "EMF protection" toward proven health habits such as sleep and activity.
Safety note: Do not let fear of wireless signals delay medical evaluation or lead to unsafe device modifications. Unregulated shields can be ineffective and may cause a phone to increase transmitting power.
Talk to a healthcare professional if: you have ongoing headaches, sleep problems, dizziness or a racing heart, so that common causes can be checked.
WHO-commissioned reviews of human studies found no rise in brain or head tumors with mobile phone use and no evidence that everyday exposure causes headaches, sleep problems or tinnitus, and a review of 5G-type frequencies found no confirmed harm. Confidence is moderate because exposure is hard to measure, the symptom evidence is very low certainty, and some rat studies at high whole-body exposures found tumors.
Everyday 5G and Wi-Fi signals have not been shown to cause health problems in people. A WHO-commissioned review of 63 studies found mobile phone use was not linked to brain tumors, and a review of the higher frequencies used by 5G found no confirmed harm at public exposure levels.
Wi-Fi and 5G use non-ionizing radio waves. At high enough power these waves heat tissue, and public safety limits are set to prevent that. The main concern comes from animal studies: in U.S. National Toxicology Program studies, male rats exposed over their whole bodies to 2G and 3G phone signals, at levels and durations greater than people receive, had more heart and brain tumors. A 2025 WHO-commissioned review rated that animal evidence as high certainty for those tumors in male rats, while finding no or minimal evidence for most other organs. The NTP says its results cannot be applied directly to people and do not apply to 4G, 5G or Wi-Fi. In 2011 the World Health Organization's cancer agency, IARC, classed radio waves as "possibly carcinogenic" (Group 2B), based on limited evidence linking heavy cell phone use with brain tumors; the 2024 review of 63 human studies did not confirm that link.
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