There are two essential bacterium in our bodies that have to do with nutrient absorption and destruction of harmful bacteria. One is called Lactobacillus Acidophilus , the other is Candida albicans .
Lactobacillus is present in the small intestine.
In the healthy person, minute tendrils called villae absorb nutrients as they pass through the intestine tract. In the healthy person Lactobacillus is counted in the billions and regenerates constantly. Candida albicans is also found in the small intestine, and is present from the moment of birth. Its job is to recognize harmful bacteria and destroy them. Without the Candida albicans bacteria, we would live for thirty minutes or less, or be placed in a sterile bubble in order to sustain life.