There are several reasons that people are interested in probiotics for health purposes. First, we are surrounded by and immersed, constantly of microorganisms, skin, intestines, mouth, and whole body. The friendly bacteria are vital to the proper development of the immune system, protection against other microorganisms that can cause disease, digestion and absorption of runoff from the food that we consume. The mixture of bacteria on each person varies. The interactions between a person and in his body, and between the same microorganisms, microorganisms are crucial to the health and well-being of the person. This Act of bacterial balance can be pulled out of balance in two important ways: 1.