I agree genetics seem to be primarily what determines "aging well." I heard or read something a long time ago that we could possibly live to be 120 except for what we do to ourselves when we are younger. By the way some study determined standing up lengthens the telomeres, so I guess never sitting or lying down would help. Plus some people just seem to have one foot in the grave. That can't help.

Was a Q. as i remember it.

Marv, if all else fails, the thing that gets you in the end is renal failure. If I recall correctly, you start to lose 1% per year when you are 30, and can survive on 5% kidney function. Pencils out to 125 is the top end for human lifespan.

Another thing that matters is how tough the individual is. Some people have a lot of quit in them, some are unfamiliar with the concept of quit.

As others have said, Masraum provided the correct essentials. It is all about what you do with yourself.

Diet, exercise, healthy mental outlook, no vices.

Genetics is a useful component, but not the largest part. Those who think otherwise are just making excuses for themselves. Race might make one think genetics plays a larger role, but in fact it is the cultural practices common to some races that encourage healthy living, which leads to aging well.

I'm 51, and look 10+ years younger, 5'8", 160 lbs. I lift daily, run daily (sub-6 minute miles), hike, ski, and mix a lot of concrete around the house. I eat normal food, in normal quantities. Never smoked. Never drugs. Rarely drink (an occasional glass of whiskey, enjoyed slowly, and never more than one one). I like my work.

My brother is 50, and looks 10+ years older. Super nice guy. I would say we are genetically very similar, maybe almost identical (looked like twins as kids). He hasn't seen his toes in years. He doesn't exercise. Loves wine and beer. Loves food. Didn't like his job for decades. Recently quit and started a new business. We'll see if that helps.

DG