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Breaking down food requires coordination across dozens of cell types and many tissues — from muscle cells and immune cells to blood and lymphatic vessels. Heading this effort is the gut’s very own network of nerve cells, known as the enteric nervous system...

One of the things being studied is the involuntary contractions that move food through the gut.

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Here is a real life video of such contractions: Intestinal Peristalsis — https://youtu.be/hKQ8eFpUKLs

That's not wrong, but it's so obvious that I'm wondering what you're trying to say?

A lot of the comments here are about "the second brain" framing as if we think in our gut, which doesn't appear to be what this research is about at all.

You are what you eat and gut health certainly impacts your brain. "A sound mind in a sound body."

But that's not really what this article seems to be about.

I really wish they wouldn't call it the second brain. It's very misleading given how the enteric system works in comparison to the brain.

I'd say that there is some information processing happening in the gut, but I'd also say (in agreement with you) that these other comments border on irrelevant and are for the most part nonsense.

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