Scientists have theorized that under the right conditions, such
bacteria burrow their way into the gut
lining, inciting immune cells to
attack and harm the intestine.
The metabolic activities performed by these
bacteria resemble those of an organ, and these microorganisms perform a host of useful functions, such as training the immune system,
attacking foreign invaders (like food poisoning compounds, toxins, etc.), preventing growth of harmful, pathogenic
bacteria in your gut, regulating the development of the intestinal
lining, producing vitamins such as biotin and vitamin K, and even producing hormones (10).
It
attacks white blood cells in the body and literally destroys the
lining of the GI tract, allowing
bacteria to infect the bloodstream (a serious condition called septicemia).