---
type: "article"
title: "Why stress goes straight to your gut"
summary: "About 80% of vagus nerve runs the direction no one mentions. Bloating, cramps, the works, and why stress triggers it."
newsletter: "Mayra Garcia, Dietitian Gutsy Bites"
newsletter_handle: "mayra-garcia-dietitian-gutsy-bites"
newsletter_url: "https://usecommune.com/n/mayra-garcia-dietitian-gutsy-bites"
author: "MAYRA GARCIA ZEDA (@dietitianmg)"
published: "2026-08-07T11:00:00.000Z"
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---

# Why stress goes straight to your gut

# ​

Hola,

We were taught that the brain gives the orders and the body obeys.

With your gut, it's mostly the other way around.

Nearly **80% of the fibers in your vagus nerve**(the direct line between your gut and your brain) carry information *up*, from body to brain. Not down.

So your gut spends all day filing reports. It's not sitting around waiting for instructions.

Here's why that matters if you live with IBS.

In a lot of people with irritable bowel syndrome, the nervous system is stuck in the wrong gear: too much "fight or flight," not enough "rest and digest." When that gut-brain conversation breaks down, the gut gets louder. It moves differently, inflames more easily, and turns the volume up on every signal.

That explains something you've probably lived a hundred times: **why a stressful day goes straight to your stomach.** Bloating. Cramps. Constipation or diarrhea, right when you can least afford it.

It's not in your head. And no, it's not only what you ate.

The good news: you can work on that conversation. And you don't need anything complicated to start.

- **Diaphragmatic breathing**, a few minutes a day. Inhale slow. Exhale slower.
- **Gentle movement.** A walk counts.
- **Real sleep,**meaning your seven to eight hours, not "whatever's left."

And if IBS is genuinely running your life, there are options with even stronger evidence worth exploring with a professional: **cognitive behavioral therapy** and **gut-directed hypnotherapy.** (Yes, hypnotherapy. It works, believe me).

But if anyone ever told you it was "just stress" or "all in your head," hold onto this: your head and your gut are wired together (literally, by that nerve) and caring for that connection is part of the treatment too.

Talk soon,
Mayra G. Gutsy Bites

***

PS. Does stress hit *your* gut first? Hit reply and tell me where you feel it — I read every one.

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