Gwern's Reviews > A History of Life-Extensionism in the Twentieth Century

Great review! You might want to fix the links to the online text, they have changed.

I don't know much about the topic, but it seems to me ther eis another factor complicating research: that humans already are pretty much optimized for long life (compared to chimpanzees or mice) so even if we manage to find interventions that significantly increase the lifespan of chimps or mice, probably it won't work in people because it's already happening in people to make us live so long already. That means experiments in human longevity have to take place in humans, which takes so much longer, because its hard to get approval and you don't get results until the humans (and scientists studying them) die of old age.