"These limit values result from the work of the International Commission on Non-Ionizing Radiation Protection, ICNIRP. In 1998, the ICNIRP ruled in view of the state of available scientific knowledge and only retained the proven effects of exposure to waves, in particular the heating of tissues."
The regulation specifies a test that measures frequencies up to only 10GHz, which is far below ionizing radiation frequencies.
I don’t doubt that there has been extensive testing on radiation but knowing exactly which atoms and molecules are essential for the human body to sustain life and the corresponding energy levels at which those atoms and molecules ionize is probably outside the scope of high school physics.
It’s not clear where the boundary is within the UV-spectrum, because different materials react differently. But it is still within UV-light, and not at low red, definitely not at radio frequency.
