What RF from Bluetooth can and can’t do - Power and exposur…

What RF from Bluetooth can and can’t do
- Power and exposure: Bluetooth operates around 2.4 GHz at very low power (typically 1–10 mW; some up to ~100 mW). That’s orders of magnitude lower than a mobile phone next to your head (often 100–1000 mW when transmitting). Exposure from Bluetooth is well below international safety guidelines (e.g., ICNIRP 2020) that are set with large safety margins.
- Cancer/long‑term health: Large animal studies (e.g., the US NTP 2018) found some tumor signals at extremely high, whole‑body exposures far above what people get from phones—let alone Bluetooth. Regulatory and public health bodies (WHO, FDA, ICNIRP, ARPANSA, Health Canada) conclude that current evidence does not show health harms from low‑level RF within limits. Bluetooth falls in that low‑level category.
- “Electromagnetic hypersensitivity”: Dozens of double‑blind provocation studies (e.g., Rubin et al.) consistently find that symptoms reported by sensitive individuals do not track whether RF is actually on or off—pointing to a real symptom experience but not caused by RF itself (a nocebo effect likely plays a role).
- Brain function/sleep EEG: A few small lab studies with phone‑like signals (not Bluetooth) reported subtle, short‑lived changes in EEG spectral power during or after exposure, but without clear, consistent effects on sleep quality or cognition. Findings are mixed and not considered clinically meaningful, and exposures were higher than Bluetooth.