curing aging should be a bigger priority than sending humans to mars

2) He's on steroids, and he knows exactly what they cost him He’s betting that AI sparks a longevity revolution in the next 5-10 years. He's 42, and if he makes it to 50, he thinks his odds of dying from organ failure are "profoundly low." He's also clear that he wouldn't recommend steroids to almost anybody.

5) By the late 2030s, 60-year-olds could look 22 He thinks age reversal is "very likely" by then because we're already doing it in mice. His story of what that looks like: a 21-year-old chats up a girl at a bar who looks his age. Eventually he asks how old she is, and she's 81. He says society will adapt to this just fine.

Wow, this is a pretty striking result for my Strong Epigenetic Theory of Aging: transplant an old heart into a young animal and the heart is rejuvenated. But transplant a young heart into an old animal, and it quickly ages to match the recipient. This shows that biological age is not simply something an organ accumulates locally as irreversible “wear and tear.” Instead, to a large degree, it is a state imposed by the organism-wide environment. The authors saw bidirectional remodeling of both DNA methylation and gene expression, with old hearts in young hosts moving toward youthful programs and young hearts in old hosts moving toward aged ones. That is exactly what you’d expect to see if aging is a regulated, system-level state where the epigenome is acting as the writable control layer that tissues continuously adjust to the organism’s age.