Non-ionizing radiation can influence bonds and, as a result, chemical reactions. Bonds can be thought of as "vibrating", for example, and non-ionizing radiatio

Non-ionizing radiation can influence bonds and, as a result, chemical reactions. Bonds can be thought of as "vibrating", for example, and non-ionizing radiation can influence this behavior. Think of it, then, as a catalyst. Even where it is not directly effecting ionization, it may be accelerating chemical reactions that are adverse to an organism's well being. As an imagined example, what happens when you have a chlorine or other halide group in the vicinity? Perhaps a particular non-ionizing radiation environment increases the probability of their doing damage by chemical reaction. I've been away from what chemistry I did know for far too long, but even that bit led me to believe the "it's non-ionizing" arguments are, at best, incomplete.