Dr. David Sinclair

Have a reliable partner.

Oh, no, that probably accelerates your age.

Yes, so if you don't have a reliable partner, have a pet because the human bond is something that is shown to slow aging and associates with people who live longer than others that are lonely.

Let's come back to that.

You just said the answer yourself.

Because your ancestors didn't live beyond 40 or 50, even less.

Most men...

in prehistoric times, would die from famine, disease, and actually a lot of them from war.

So most people didn't make it to 80.

Some people did, but very, very rarely.

So the forces of natural selection were on...

Early survival and fast breeding.

Let's put it this way.

If there was someone who was born with a mutation that allowed them to live a lot longer, to 90, in a prehistoric world, that's useless because you're probably going to die at 30 or 40 anyway, and so are your children.

So what you want to do is find genes that allow you to become reproductively successful.

early on in life and make sure your children survive.

And so we have children pretty early, but humans, for various reasons, have a long developmental period, including education.

So we don't develop very rapidly, right?

We don't wake up and we can walk and run like a lot of other species and mammals.

But we don't live a long time because there was, in the environment that we evolved, the Serengeti Plain is pretty much agreed upon as that's one of the places we evolved, certainly Eastern Africa.