Your microbiome is a community of microorganisms that live in your body. It's made up of bacteria, viruses, fungi and other microorganisms that help you digest food and fight off infections.
Your microbiome has a huge impact on your health: it can affect everything from the way you respond to medications to how quickly you recover from illnesses like the flu. And if your microbiome isn't healthy enough to support you, it can leave you more vulnerable to disease.
Watch the video above for more information about microorganisms.