Most people understand the importance of a healthy gut microbiome for digestive health and overall wellbeing. Here, Mahmoud Ghannoum introduces an important component of the microbiome: the mycobiome—the fungi that live inside our bodies—and explains how diet affects this population and how its balance or imbalance can cause you to feel. Gut fungi respond quickly to dietary changes. Ghannoum outlines changes for fostering healthy fungi as well as diet plans, with more than 50 dietician-tested recipes, to cultivate a thriving mycobiome and methods for tweaking your lifestyle for long-term gut health.