Saturated fat, cholesterol and sodium: that diet would put me on two pills per day, one cholesterol-lowering and the other for hypertension. It would also dramatically increase my odds for a cardiac event. But that is just my makeup, and my desire for a long, healthy life.
It did indeed kill my grandfather, he might have made it to 96 if had eaten only shrubs.
I’m sorry that your health does not allow you to eat a normal diet, but that does not change what a normal diet is.
The only diet that has been scientifically proven to increase lifespan is a near starvation diet, but that isn’t the healthiest diet, nor one that many people would choose, even if assured of a 25% increase in lifespan.
Interesting how being healthy, living long, and enjoying life don’t coincide in diet. I think a normal omnivore diet provides the best balance of the three. All things in moderation (if you don’t have a medical condition that requires a special diet).