Dr. David Sinclair

That was an extremely difficult and dangerous place to live.

You could get eaten by an animal.

And if you didn't get eaten by an animal, you get killed by the neighboring tribe.

That's super dangerous, right?

And then so we evolved to live really at optimal to about 30%

But not much more than that.

So after 30, as you might be experiencing with your body, we're at the forces of entropy.

So the body starts to decay.

The information starts to get lost in the body.

But the good news is that if you take away predation and death from a species, it evolves longer lifespans.

Now it makes evolutionary sense to have genes that allow you to put more effort into building a strong body and slowing down the aging process and preventing DNA breaks, chromosomal breaks.

We know that this is true because if you put species, say, on an island where there are no predators, what happens to their longevity?

They get longer lived naturally.

It takes 20, 30 generations, but only when there's no predation, when you're not under a lot of stress to breed quickly, do you get longer lifespans evolving.

Given that humans don't have predators anymore, we are slowly evolving.

Longer lifespans.

But it's very slow, and it's not going to happen fast enough for you and me.

The bristlecone pine.

It's the longest-lived tree in the world.

It can live many thousands of years.