Bibliographic summary on intestinal flora and their relationship with human health

Abstract

The intestinal flora is defined as all the microorganisms that live in the digestive tract. This complex ecosystem consists mainly of bacteria, with the presence of viruses, yeasts and protozoa, and occupies an important and recognized place in human health. Its composition is generally stable over time for the same individual. Some intestinal flora can metabolize drugs, toxins, and other xenobiotics, which may affect their effectiveness or toxicity. The intestinal flora plays an essential role in all aspects of the body. It is the largest immune organ in the human body and is essential for the development of the innate and adaptive immune system of the intestinal mucosa, as well as its response to pathogens. However, there are certain factors that can cause changes in the intestinal flora and lead to an imbalance, which can be observed in many diseases (intestinal, allergic, neurological...) that affect a large number of the world's population.