Isn’t radiation used to kill cancer cells? Won’t the radio tower emit radiation that could kill normal cells, too, and make me sick?

Radiation therapy is one method of treating cancer, and that medical procedure uses ionizing radiation, which is recognized to damage cell structure and so is targeted at cancerous cells.  This radiation is distinct from radio frequency radiation, which is non-ionizing and does not interact with living cells in this way.  Radio towers do not emit ionizing radiation.