Your gut is more than just a system for breaking down your food into helpful nutrients. It's also home to your gut microbiome, a collection of helpful microorganisms that may be small in size but are monumental in health. This collection of all the microbes in your GI tract, including bacteria, fungi, and other microorganisms, can be both helpful and potentially harmful. Keeping your digestive organs humming and your gut microbes in balance is what constitutes a "healthy gut." So, how exactly do you do that? Here's why GI health matters, and what you can do (or eat!) to make your gut a happy home.