When your gut is healthy, it influences everything from digestion, to the brain to your immunity. The gut is home to trillions of good and bad bacteria which stay in balance. These are the MICROBIOME. Poor diet is one of the biggest causes of gut issues. While the good bacteria thrive on fiber and plant foods, the bad bacteria and yeast love processed foods and sugar. Studies have shown that even in a short period of time undesirable changes take place in the gut.