Dr. Tony Wyss-Coray

So our natural lifespan is probably around 30 to 40.

If you look back in history, that's how long people lived.

I mean, there were always individuals who had, you know, exceptional lifespan, but most people would die much earlier.

Of what?

Infections.

And it was probably mostly infectious diseases.

But

You know, you could argue from an evolutionary perspective, once you're sexually mature, you reproduced and you guaranteed your offspring, which is around 30 to 40 years.

Nature doesn't care about you anymore.

And so there's no longer.

It's very brutal to hear.

Then you may have some evolutionary pressure to maintain individuals who have knowledge and wisdom to help the group to survive.

but that's probably a much weaker force of evolution to keep you alive, right?

And so that's why people increasingly see now that there are these inflection points that menopause, but also in men around age 30 to 40,

Dramatic changes in the composition, again, of the blood.

We just looked at this, I mentioned earlier, if you look at the composition of the blood across human lifespan from 20 to 90, we call these waves of aging.

The first wave is around 35 years of age.

Dramatic changes in concentrations of lots of factors.

And not just in women, in men as well.

35.