Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
That's such a great point, which is that ultimately we want the short-chain fatty acids, which is the medicine that the microbiome are making for us through the microbial fermentation process.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
And we can basically do that in three ways.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
One is we can eat more fiber, which is prebiotics.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
We can also eat more polyphenols because we're now learning that the microbiome actually processes, they ferment polyphenols, which is basically you'll find those in colorful fruits and vegetables, spices, teas, cocoa, things like that.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
So fermentation of polyphenols and fiber to short-chain fatty acids, which then we absorb.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
And then, like you just said, in a fermented food, the bacteria in that food will be making short-chain fatty acids by fermenting the food in there.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
And then if we drink that, we're getting the short-chain fatty acids directly.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
So that's the kimchi, sauerkraut, Greek yogurt, kvass, which I'm obsessed with, which is like low-sugar kombucha.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
It's like made with fermenting beets, basically.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
It's such good stuff.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
Miso natto.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
So that's one.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
That has been shown to differentiate more L-cells in the gut.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
We also know that people with type 2 diabetes have much fewer L-cells in the gut.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
And it's hard to know what the causality is there.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
But I think a safe assumption is like if we keep our blood sugar under better control and sort of stay out of that diabetic range, it probably lends itself.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
I don't know what the chicken and the egg is there, but blood sugar stability, more L-cell differentiation.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
And then actually ginseng.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
has been shown to improve L-cell differentiation.
Huberman Lab
Dr. Casey Means: Transform Your Health by Improving Metabolism, Hormone & Blood Sugar Regulation
So that's just one set of things.