Your right its a personal privacy issue we have to honor and respect about every individual is different. If I was sick, you know about it for sure lol for prayer, support, and acceptance.
Cancer is a bad monster along with a lot other illnesses and diseases that humans get and deal with for answers and healing!
We can only eat right, exercise, sleep, reduce stress, take care our our body, mind, and soul in our own control nothing else but ask God for help and a miracle of healing!