At stage 4, he frankly doesn't really have the time to be fooling around with homeopathic cures and postponing treatment could be very quickly fatal. Cancer cells are already in his blood stream, and may already be invading lymph nodes and other organs...including the brain. My grandfather died four months after being diagnosed with stage 4 throat cancer and decided to forgo treatment. With treatment, a 24-year-old man I know with stage 4 bone cancer died after nine months, but they also had not gotten in to the doctor until the tumor split his femur. At his age they had no reason to suspect that the pain he was experiencing had to do with cancer. Chemo has advanced to the point that it can now target only cancer cells, as opposed to outdated chemotherapy that killed healthy cells along with harmful ones. However, be aware that at stage 4 it is going to take fast and aggressive treatment to give him any hope of getting rid of it. People do survive it now, thanks to the advances in medicine, but without taking advantage of those advances he has little to no chance.