kilemall
SOC-14 5K
Traveller introduces a rather steep aging curve, which seems a poor fit for nutrition, medical science, and biotech three millennia beyond our own. I would argue for significantly expanded youthful vigor and overall life expectancy even without anagathics.
If you could extend each decadal characteristics by five years, you'd have teen-like resilience until 25, twenties-like peak until 40, thirtysomething okay-ness until 55, forties-ish can-almost-keep-up-but-beat-the-youngsters-with-experience until 70, fifties I-can-teach-you-whippersnappers-a-thing-or-two until 85. Retirement age might be 100 (equivalent to 70), just to make it a round number, but lots of folks would still be able in mind and body to work until 115 or so.
I can't see how three millennia would fail to get us there.
Perhaps so, but the rigors of space travel, all those rads, and dangerous woundings/atmos/exotic diseases etc. may take a toll that offsets what medicine can do.
"It's not the years, it's the mileage".
Another factor to consider is that maybe yes it is all possible, but it's also expensive, and only the connected and the rich get access to it. Then you get two tiered societies with the high end SOC and possibly the lowlife types are often out to earn enough to keep the anagathics and functional equivalent treatments/genegineering coming.