Welcome to the Dr. Gundry podcast, where Dr. Stephen Gundry shares his groundbreaking research from over 25 years of treating patients with diet and lifestyle changes alone.

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A post-holiday gut reset in only four days.

All right, I want to talk about something that you probably have never heard about,

but you need to know about.

And that's a weird hormone called Froblast growth factor 21, better known as

FGF21. And what you need to know about FGF21 is that it has recently been related to longevity and actually maintaining a normal

lean weight. So fiberblast growth factor 21 is a really important signaling molecule.

And you know I'm all about signaling molecules.

Well, this signaling molecule turns out is elaborated in our liver.

And it's elaborated by several things.

First of all, complex carbohydrates, opposed to animal protein turn on the production

of fibroblast growth factor 21.

And believe it or not, that's a really good thing.

In fact, people have shown in experimental animals that FGF21 really promotes longevity and, like I said,

leanness. So we probably ought to be interested in that. Similarly, the presence of animal

protein suppresses FGF21.

Probably not what we want to do if leanness and longevity are what we're interested in.

So is there any correlation to other studies that suggest that maybe this could work out well.

Well, yes, there is.

First of all, studies have shown that following a plant-based diet for four days

dramatically increases human levels of FGF21.

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