Radiofrequency radiation from smartwatches damages the brain.

Is it true that radiofrequency radiation from smartwatches damages the brain?

Partly. Evidence is mixed and only partial: some reviews suggest RF exposure may cause cellular or nervous-system changes, while a CDC page says wearables like smartwatches expose users to very low RF levels within limits, and other studies find no harmful effect from RF alone. None of the sources directly establishes that smartwatch radiofrequency radiation damages the brain.

Verdict: CONTESTED PARTIAL · 3 sources for, 4 against · Last checked 3 Oct 2026

The private library was unavailable for some searches in this check. Missing library results are not evidence against the claim.

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radiofrequency radiation. (n.d.). cancer.gov. https://www.cancer.gov/publications/dictionaries/cancer-terms/def/radiofrequency-radiation

Mortazavi, S. & Mishra, K. (2017). Mobile phone use and cancer: Does dose really matter?. doi.org. https://doi.org/10.4103/JRCR.JRCR_39_17

Şeker, Ş. & Simsek, O. (2023). Brief Review of Biological Effects of Electromagnetic Pollution(RF and 5G Waves) on Humans, Animals, and Vegetation. doi.org. https://doi.org/10.15680/ijirset.2022.1112001

H., G. D. & H., S. P. (2020). Absorption of 5G radiation in brain tissue as a function of frequency, power and time. authors.library.caltech.edu. https://doi.org/10.1109/access.2020.3002183

Evaluation of Inflammation by Cytokine Production Following Combined Exposure to Ultraviolet and Radiofrequency Radiation of Mobile Phones on 3D Reconstructed Human Skin In Vitro. (2020). ineris.hal.science. https://doi.org/10.3390/ijerph17124401

Facts About Wearable Technology | Radiation and Your Health | CDC. (n.d.). cdc.gov. https://www.cdc.gov/radiation-health/data-research/facts-stats/wearable-technology.html