70% of your immune system & 90% of Serotonin (feel good chemicals) are made in your gut. And wether our immune system is strong, head is happy, and nutrients get absorbed from food is heavily dependent on OUR GOOD GUT BACTERIA (aka PROBIOTICS).
How Probiotics work:
Processed foods & crappy starches feed our bad bacteria / soldiers. Good food feeds are good bacteria / soldiers. Probiotics simply add more good soldiers to the ranks.
So keep replenishing your good soldiers/ probiotics & feed the existing ones good food while starving out the bad ones by reducing your sugar and crappy starches. This will keep your stomach lining strong to absorb nutrients and keep toxins from leaking through a damaged gut wall.