Probiotics Beneficial Bacteria Immune System. Residential bacteria form colonies in your gastrointestinal tract, mouth, and vaginal tract.
Transient bacteria are travelers that are just passing through.
Friendly bacteria including Lactobacillus acidophilus , Bifido-bacterium bifidum , and Lactobacillus bulgaricus are your body's first line of defense against the potentially harmful microorganisms that you inhale or ingest. Probiotics are another term for these friendly bacteria that live and work in your gastrointestinal tract every day of your life. Having sufficient numbers of these friendly bacteria in residence can help prevent a wide range of health problems.