In other words, why some people have longevity genes and others don’t. Most centenarians can do pretty much anything with protective genes that delay aging and offering protection against age-related diseases or they would not have made it that far.
Actually, I think there is evidence we can extend our lives and reverse some of the accrued damage we get.
There are some amazing insights that are reversing blood signs of chronic inflammation. You can even reverse arterial soft plaques and the hard plaques that usually are on top of them.
We do a lot to ourselves that makes us die early. Unleashing those from our lives can do wonders.
My dad is 93 ... he quit smoking back in the 70s as did 1 of my uncles. The two that quit smoking made it past 90 ... the grandfather and uncle that smoked died in their 70s.
In our family not smoking seems to help.
YMMV.