Darn right it does! All those nutrients in healthy food have a huge impact on your brain function and therefore your mood. Think as your body as one big machine, if all the parts are working properly by obtaining the right fuel, all systems should be good to go!
95% of serotonin is created in our gut and so is GABA. The bacteria in our gut is called our microbiome, a diverse ecosystem, and it makes up approximately 1 kg of weight in the average adult. This bacteria protects our intestinal lining, aids in digestion and the absorption of the nutrients found in what we eat, and even aids the manufacturing of neurotransmitters creating a link between our gut and our brain.
When we eat nutrient rich whole foods we are enabling our bodies to function as they were designed. Probiotics, prebiotics and fermented foods all aid our gut bacteria. Fibre rich foods help the bacteria in our colon.
So bring on the whole foods (foods that have not been altered) and create a great ecosytem within you! Boost your mood, fight off harmful disease and live well!