Understanding the human body is a team effort. That's where the Yachtel group comes in.

Researchers at Yachtolt have been delving into the secrets of probiotics for 90 years.

Yacold also partners with nature portfolio to advance gut microbiome science through the global grants for gut health, an investigator-led research program.

To learn more about Yachtolt, visit yawcp.co.j.jop.com.j, that's y-A-K-U-L-T-C-O.J-P.

When it comes to a guide for your gut, count on Yacolt.

This is Scientific American's 60-second science. I'm Christopher in Taliatta.

The paleo diet is a popular high-protein diet that aims to mimic what our hunter-gatherer ancestors ate.

But what we buy at the supermarket doesn't quite approximate those ancient foods.

Take, for example, star-lily roots.

Heard of those?

And taste the black yams.

Lynn Wadley is an archaeologist at the University of the Vitwatersrand in South Africa.

Her team recently discovered the charred remains of star lily roots in South Africa's border cave,

hunks of roasted root that date to 170,000 years ago.

And so there's greater glucose availability once the root vegetables are cooked.

And they knew that nearly 200,000 years ago, which I think is extraordinary.

Or maybe they didn't know the chemistry of it, but they would have realized that they feel far more satisfied

after eating a meal that is cooked than eating one that is raw.

It's not easy to identify a charred chunk of ancient food, though.

So Wadley's team gathered an array of raw ancient foodstuffs and then roasted and charred them

in ovens and campfires.

They then did visual comparisons

...