I dig butter but I find it hard to take figures from 100 years ago for comparison of diseases. 100 years ago cause of death and illness diagnosis wasn't as accurate so people who had these conditions would have been said to just be getting old.
Though my pops doctor said that a couple of years ago and a second opinion with an iron injection fixed him up.
My grandparents cooked in lard and ate butter and pop turns 90 in September, while these days people are smashing heart safe margarine and not making 50.