For all he's trying it may just boil down to his genetics. I've known heavy smokers who outlived their wife and children. You often see on the news Centenarians

For all he's trying it may just boil down to his genetics. I've known heavy smokers who outlived their wife and children. You often see on the news Centenarians say they drank whisky each day, or eat bacon, or pray, or whatever. From my experience other than the obvious to be active, eat healthy (I don't see vegan as healthy, but vegetarian yes), consistent sleep being social is a big boost to people's lives. By being social I mean meet other people than your own family immediate family.