Dr. Will Bulsiewicz

That's basic training.

But these little soldiers that are there to defend your body, they get deployed to the front lines in your gut.

That's where most of them live.

And in that location, they are so close.

If you were watching this on YouTube, you would zoom in and see my fingers that are saying they are so close to 38 trillion microbes living inside of you.

The only thing that separates them is a paper thin single layer of cells called the gut barrier.

This is our epithelial layer.

And that lines the entirety of your intestine and it keeps the gut microbiome on one side and it keeps your immune system on the other.

And what I've discovered, Jonathan, when I graduated medical school, I thought as a practicing internal medicine doctor and as a practicing gastroenterologist that

that your immune system is your defense system, that's your first line of defense, I was wrong.

It's your third.

The first is your gut microbiome.

Your gut microbiome, by being healthy, strong, diverse, it crowds out and reduces the inflammatory pathogenic bacteria.

We know this because if you wipe out the gut microbiome, you expose yourself to risk of an infection.

The gut microbiome also is training your immune system.

We get the benefit from birth where the gut microbes that are basically coming into and becoming a part of our body are actually teaching your immune system who are the good guys and who are the bad guys.

When the gut microbiome is doing its job properly in that role, your immune system will know who the good guys and bad guys are as a result of that.

but also the gut microbes, they are producing really important chemicals, the short chain fatty acids.

These are the most anti-inflammatory chemicals that I've come across.

I've been saying this for five years.