I'd imagine the appeal is the interaction with our gut biome, which is not only turning out to be one of the most important biomes in our body - but also one of

I'd imagine the appeal is the interaction with our gut biome, which is not only turning out to be one of the most important biomes in our body - but also one of the most poorly understood. We evolved on many things that we now consider unhealthy, which would include running freshwater as a drinking source. And while our life expectancy has increased (though in the US, it is now in decline) that's largely been an issue of reductions in childhood mortality. Ancient Greeks had next to no clue about medicine, relative to what we have today, yet oddly enough many lived comparably long as we do today. Socrates died at 71 by execution. Plato 80, Pythagorus 75, Hippocrates 90, Eratosthenes 82, etc. There's not much survivorship bias there. These individuals made their legacies decades earlier. Aristotle, would be the exception on longevity, having died at a 'young' 62, though we are certainly still familiar with him! Imagine we took our medicine (but not our cultural values) to Ancient Greece. What would their life expectancies have become?