The therapy is called Radiation Therapy. Its a treatment that kills abnormal cells or cancel cells by using radioactive ray such as gamma rays use it in killing the cancer cells in the body without harming any good cells that support the immune system of the body. This therapy also use any king of radioactive material in the treatment by placing it in the area that is near the cancer cells or a tumor.
Expected life events wont be as terrifying because you know they are coming unexpected life events could be deadly though cause i mean cancer is usually unexpected and it could go on for a while without you knowing. Hope this helps!
Ok so this is about child nutrition right