Radiation can be TOXIC to the being.
Higher frequency radiation negatively affects your body by removing electrons from the atoms in your body, which creates free radicals; which are damaging your DNA, resulting in Cancer.
Ionization radiation are cosmic rays, natural radiation from the earth, medical diagnostic tests, nuclear weapons & ultraviolet light.
Non-Ionizing sources like power lines, televisions, and cell phones have been called carcinogens.
Carcinogens: a substance capable of causing cancer in living tissue.