You're joking, but that's probably the right strategy: make sure to enjoy things on both sides of the aisle, so you don't have to worry about which side adds, and which removes, years. And then don't fret about it.
Aside from that, I'd love to know how each of those items affects life quality. Living long is only a life goal up to a certain age, and from what I've seen around me, that age is very rarely 90.
Yeah, living to old age at the cost of overoptimizing every little thing in your life does not seem like a worthwhile endeavor.
You'll only add years that won't be terribly useful or pleasant anyway, because anyone has to deal with some form of wear and tear regardless. At the very least, all the old people I know have to deal with some audition and sight loss, and even when they are in decent physical shape, they seem to be hurting somewhere.
It feels like trying to be immortal, which is a bit of a folly.
Anyway, the other day I noticed that Warren Buffett is just retiring at the age of 94. The man has eaten McDonald's for breakfast for much of his life. Diet cannot be that big of a deal.
What those epidemiological studies reveal is that food associated with higher class makes you live longer, which is reverse causation, at best.
Aside from that, I'd love to know how each of those items affects life quality. Living long is only a life goal up to a certain age, and from what I've seen around me, that age is very rarely 90.