The Gut-Mood Connection: A Deeper Look

You cannot heal a brain that is being inflamed three times a day from the dinner plate. The gut and the brain are in constant conversation through the vagus nerve, the microbiome, and the immune system. When the gut suffers, the mind suffers — predictably.

What the Gut Does for Your Mind

• Makes ~90% of your serotonin

• Produces GABA, dopamine precursors, and short-chain fatty acids that calm the brain

• Trains the immune system, which directly affects mood

• Signals fullness, satisfaction, and safety up the vagus nerve

What Disrupts It

Ultra-processed food, chronic stress, antibiotics, alcohol, poor sleep, low fiber, and unaddressed food sensitivities.

Five Whole-Person Steps

1. Eat 30+ different plants a week — variety feeds microbial diversity.

2. Add fermented foods — yogurt, kefir, sauerkraut, kimchi.

3. Protein at every meal.

4. Cut ultra-processed snacks.

5. Hydrate — even mild dehydration affects mood and digestion.

The brain follows the gut. Heal one and you are well into healing the other.

Respectfully, Beth Makar, RN, Dual-MSN, PMHNP-BC · Integrative Mind Body Psychiatry · integrativemindbodypsychiatry.com