What is my take on all this?
Before a person is born everyone's last date on Earth is confirmed first.
I have come across many old people with big rounded stomachs.
I am sure they suffer from many medical problems BUT they are still walking around - aged 92 and above.
Some poor souls suffer from medical conditions much younger without any fault of theirs.
I am not saying you ignore your intake of food, doctor medical appointments, etc etc
If your medical shows high cholestrol, diabetes etc control it. See a doctor. Otherwise you are being an idiot.
Some doctors will prescribe you many different kinds of vitamins. Be very careful. Excess vitamins can cause you numerous medical problems and affect you liver, heart, kidneys, etc.
If you lack some vitamin or magnesium for eg. check it first. If it low take the vitamin etc. Do not keep on taking pills forever. Too many vitamin pills will destroy your quality of life.
But the end date is set and cannot be changed unless some Supreme natural force decides and changes your fate.