Have you ever had butterflies in your stomach? Recent studies have found that there is a very important connection between your gut's microbiome and your brain. In fact, your gut produces over 90% of the serotonin in your body. So what is gut health and how does it connect to your overall emotional health? Katie Leonard walks us through some cutting edge research on your gut, the importance of holistic health, and even provides some of her practical advice on making healthier decisions.