Why the Gut Is Called the “Second Brain”

The gut’s enteric nervous system operates independently of the brain.
It contains over 100 million neurons that manage digestion on their own.
The gut produces about 90% of your body’s serotonin — the “feel-good” chemical.
Gut health directly influences mood, focus, and even decision-making.
The brain and gut constantly communicate via the vagus nerve.
Microbes in your gut can affect how your brain responds to stress.
A balanced gut microbiome helps stabilize emotions and mental clarity.
Poor digestion can contribute to anxiety, brain fog, or low motivation.
Nurturing your gut is like tuning your emotional engine.
It’s no wonder scientists now call the gut your “second brain.”