30 or 40 years ago most people that had cancer were dead within five years. That is no longer true. I know several people that had serious cancers that are still alive and doing fine. Thirty years ago they would have been lucky to last a year.
When I was a young x-ray tech in the late fifties,and worked the night shift the pathologists would invite me down to the lab when they were doing autopsies,they (two) of them and the only two that invited me to watch both said that if one did a complete autopsy on folks in their sixties and older,they were sure to find four or five cancers that had encapsulated themselves and never bothered the person. I have found this substantiated through the years in different studies.