Your Gut Has a Brain

The fascinating link between your belly and your mood.

Your Gut Has a Brain

Ever had “butterflies” in your stomach? Or felt sick when anxious? That’s your gut-brain connection at work—and it’s far more powerful than most people realize.

The Second Brain

Your gut contains over 100 million neurons—more than your spinal cord. Scientists call it the “enteric nervous system” or your second brain. It can operate independently and communicates constantly with your head brain.

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About 95% of your serotonin (the "happy hormone") is produced in your gut. Gut health literally affects your mood!

Two-Way Street

Stress affects your gut, and gut problems affect your mood. This isn’t “all in your head”—it’s physiology. Understanding this connection helps explain why digestive issues so often come with anxiety or low mood.

Supporting Both Brains

  • Manage stress (it directly affects digestion)
  • Eat mindfully, without screens
  • Include fermented foods (if tolerated)
  • Prioritize sleep
  • Move your body regularly

Taking care of your gut IS taking care of your mental health. They’re not separate.

Ready to put this into practice?

Start tracking your meals and symptoms with EatSense to discover your personal food triggers.

Download EatSense on the App Store