As someone deep into middle age with plenty of friends in their 50s, I strongly encourage young people to pay particular attention to their time spent in the sun. It is extremely obvious who has led a life outside without sun protection and who has spent most of their time indoors. It really does a number on your skin, especially your face (and scalp, if you are follicle challenged).
What are the natural background levels of RF vs. sunlight from an evolutionary perspective? Consider whether organisms would spend energy evolving protections against a dominant spectrum of wavelengths vs. hardly measurable spectrum.
Also, consider that the net resulting incidence voltage from unpolarised sunlight amounts to near zero, whereas man-made RF is polarized.