Are mm waves safe?

In humans, MM-waves have penetrating effects including impacts on the brain, producing EEG changes and other neurological/neuropsychiatric changes, increases in apparent electromagnetic hypersensitivity and produce changes on ulcers and cardiac activity .

Millimeter waves are electromagnetic (radio) waves typically defined to lie within the frequency range of 30–300 GHz . The microwave band is just below the millimeter-wave band and is typically defined to cover the 3–30-GHz range.

Millimeter waves — often referred to as mmWaves or high-band 5G — are frequencies starting at 24 GHz and beyond . As radio waves increase in frequency, each wave narrows in length. Because of its high frequencies, mmWave has a limited range of only 300 to 500 feet and struggles to penetrate buildings.10 Eyl 2021