---

An essential aspect of human health is nutrition. Eating a balanced diet that includes the foods necessary to maintain the intestinal microbiota in an optimal state is essential. This microbial community, made up mainly of bacteria, establishes a symbiotic relationship with the intestine. While the latter provides them with the environment and nutrients necessary for their development, the bacteria perform functions that the intestine is not capable of performing and that are essential for the correct functioning of the organism. The microbiota participates in a variety of functions, among which its important role in nutrition stands out, by contributing to the digestion of food, the absorption of nutrients, the production of amino acids and vitamins, and the recovery of energy. Likewise, it performs protective functions by preventing the invasion of pathogenic bacteria, also having an active participation in the degradation of toxins. Of the rest of its functions, its role in the stimulation of the immune system and the synthesis of neurotransmitters stands out. The imbalance of the intestinal microbiota (Dysbiosis) caused by chronic stress, poor eating habits associated with unhealthy diets, the use of antibiotics and lifestyles can have serious consequences for health.