Why do we need symbiont bacteria?

The skin, mouth, intestines and part of the organs of the reproductive system of women are inhabited by symbiont bacteria. These are the microorganisms that are in a mutually beneficial relationship with the human body. The absence of symbiont bacteria contributes to the colonization of mucous membranes or skin with pathogenic bacteria. If symbiosis is disturbed in one of the niches of our body, a person falls ill, this condition is called dysbiosis, which in the future can cause complications involving neighboring organs and tissues.