I have been collecting information and studying potential health hazard effects of 5G radiation (so-called millimeter electromagnetic waves) for humans. This is a recent summary paper with an extensive bibliography.

Personally, I consider imprudent and premature the fast deployment of 5G wireless networks. I am well aware of its huge business potential, but I also know how millimeter waves can be dangerous for people and life in general.

Note: Electromagnetic waves do interact with biological tissues at the cellular level. Contrary to the opinion of many people, the effects are not limited to thermal effects (as in a microwave oven) but include significant non-thermal effects mainly through activation of the voltage-gated calcium channels that exist at cell membranes. These activations can lead to serious detrimental effects. See, for example:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3780531/