Devin Katayama

Fast forward a couple of decades. It's the early 1900s. The now famous Metchenkoff set out to pioneer the study of aging and cure it. He wants people to be able to live happy and healthy until they're ready to die.

Fast forward a couple of decades. It's the early 1900s. The now famous Metchenkoff set out to pioneer the study of aging and cure it. He wants people to be able to live happy and healthy until they're ready to die.

Fast forward a couple of decades. It's the early 1900s. The now famous Metchenkoff set out to pioneer the study of aging and cure it. He wants people to be able to live happy and healthy until they're ready to die.

By now, he's a superstar at the Pasteur Institute, which was one of the most prestigious science facilities in the world at the time. It's sort of a scientist's dream. He has lab assistants, facilities, all the resources he could imagine at his fingertips. And he gets to work.

By now, he's a superstar at the Pasteur Institute, which was one of the most prestigious science facilities in the world at the time. It's sort of a scientist's dream. He has lab assistants, facilities, all the resources he could imagine at his fingertips. And he gets to work.

By now, he's a superstar at the Pasteur Institute, which was one of the most prestigious science facilities in the world at the time. It's sort of a scientist's dream. He has lab assistants, facilities, all the resources he could imagine at his fingertips. And he gets to work.

There are mice and rats and geese and cats and dogs. There's this 87-year-old turtle and a 70-year-old parrot.

There are mice and rats and geese and cats and dogs. There's this 87-year-old turtle and a 70-year-old parrot.

There are mice and rats and geese and cats and dogs. There's this 87-year-old turtle and a 70-year-old parrot.

And that's just the beginning. He starts pulling out hair from an old Great Dane, from a co-worker, and then from his own head to figure out why it's turning gray. And remember, he's a renowned immunologist with kind of a savior complex. So he's also spreading the gospel to everyone he knows.

And that's just the beginning. He starts pulling out hair from an old Great Dane, from a co-worker, and then from his own head to figure out why it's turning gray. And remember, he's a renowned immunologist with kind of a savior complex. So he's also spreading the gospel to everyone he knows.

And that's just the beginning. He starts pulling out hair from an old Great Dane, from a co-worker, and then from his own head to figure out why it's turning gray. And remember, he's a renowned immunologist with kind of a savior complex. So he's also spreading the gospel to everyone he knows.

Okay, so maybe he's not like the most fun guy to have around, but this is the beginning of the science of aging, of gerontology, which, by the way, was a term that Metchnikoff coined in 1903. And science is all about making mistakes, so you can find that one thing that works. And as he's conducting all these experiments, he zeroes in on this one idea, that the body was being poisoned.

Okay, so maybe he's not like the most fun guy to have around, but this is the beginning of the science of aging, of gerontology, which, by the way, was a term that Metchnikoff coined in 1903. And science is all about making mistakes, so you can find that one thing that works. And as he's conducting all these experiments, he zeroes in on this one idea, that the body was being poisoned.

Okay, so maybe he's not like the most fun guy to have around, but this is the beginning of the science of aging, of gerontology, which, by the way, was a term that Metchnikoff coined in 1903. And science is all about making mistakes, so you can find that one thing that works. And as he's conducting all these experiments, he zeroes in on this one idea, that the body was being poisoned.

Specifically, the large intestine.

Specifically, the large intestine.

Specifically, the large intestine.

The idea that something bad was happening in the intestines is one that dates back thousands of years, so this wasn't necessarily a new idea. But in the late 19th century, it was making a comeback because science was making new links to germs and disease.

The idea that something bad was happening in the intestines is one that dates back thousands of years, so this wasn't necessarily a new idea. But in the late 19th century, it was making a comeback because science was making new links to germs and disease.