microbiota

The human microbiota consists of a wide variety of bacteria, viruses, fungi, and other single-celled animals that live in the body. While some bacteria are associated with disease, others are actually extremely important for your immune system, heart, weight and many other aspects of health. Microbiota stimulate the immune system, break down potentially toxic food compounds, and synthesize certain vitamins and amino acids, including the B vitamins and vitamin K.