Intestinal Flora, Or Gut Microbiota, Refer To The Microorganisms That Live In The Gastrointestinal Tract. These Microorganisms Play An Important Role In Human Health, Aiding Digestion, Providing Essential Nutrients, And Strengthening The Immune System. Intestinal Flora Are Composed Of Bacteria, Archaea, Fungi, And Viruses. The Composition Of Intestinal Flora Varies From Person To Person And Is Influenced By A Variety Of Factors, Including Genetics, Age, Diet, And The Environment. It Is Estimated That The Average Adult Has At Least 40 Trillion Microorganisms Living In Their Gastrointestinal Tract. The Primary Role Of Gut Microbiota Is To Aid In The Digestion Of Food By Breaking Down Complex Molecules Into Simpler Molecules, Such As Short Chain Fatty Acids, Which Can Be Absorbed By The Intestine. These Bacteria Also Produce Essential Vitamins And Nutrients, Such As Vitamin K And Biotin, Which Can Be Absorbed By The Body. In Addition, Intestinal Flora Play A Role In Protecting The Body From Disease-Causing Bacteria And Viruses. They Do This By Competing For Resources, Producing Antimicrobial Compounds, And Stimulating The Immune System.