Probiotics are microorganisms, such as bacteria and yeast, found naturally in the intestines, according to WebMD. The human intestinal tract contains more than 500 types of bacteria that help digest food. The American Ga... More »

Probiotics are good for a person's health because the organisms protect newborn infants, maintain the digestive tract, boost the immune system and kill negative bacteria, according to MedicineNet. Probiotics expel toxins... More »

Probiotics are very beneficial to overall health, but they are especially good for the digestive system, notes WebMD. Probiotics may help replenish the good bacteria in the gut after taking medication such as antibiotics... More »

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HowStuffWorks notes that probiotics work because they recolonize the stomach with healthy bacteria, which are usually eliminated by antibiotics. Scientists are convinced that probiotics fight toxins and pathogens. Probio... More »

Lactobacillus acidophilus is a form of bacteria that occurs naturally in the body in areas such as the mouth, vagina and intestines, according to Mayo Clinic. Although it lacks the ability to produce other vitamins and a... More »

Acidophilus is a species of helpful bacteria that is found in the intestines and vagina, explains It is sometimes used to help treat yeast infections and diarrhea from antibiotics, and it is thought to work by... More »

Milk provides an environment that is particularly favorable for the growth of microorganisms, resulting in the rapid growth of mold, yeast and bacteria. Milk that is freshly drawn is around 38 degrees Celsius and needs t... More »