Microbiota refers to the collection of microorganisms, including bacteria, viruses, fungi and protozoa that live in a specific environment, such as the human body. These microbes are essential for maintaining healthy bodily functions, including digestion, immune system regulation, and protection against pathogens. The term "microbiota" is often used to describe the community of microorganisms living within the human gut, which plays a crucial role in overall health and well-being.