oa SA Pharmaceutical Journal - Probiotics : review
Bacteria are normally associated with causing disease. However, the body is full of bacteria, both "good" and "bad". The intestinal tract is host to a vast range of microbes which are necessary for health. However, these microbes have the potential to contribute to the development of diseases by a variety of mechanisms. Probiotics are "healthy" microorganisms, such as yeast or bacteria, especially lactic acid bacteria, which are good for health. Probiotics are often referred to as "good" or "helpful" bacteria because they help to keep the digestive system healthy and are believed to protect the immune system. Probiotics exhibit strain-specific differences in their resistance to acid and bile, in their ability to colonise the gastrointestinal tract, in their clinical efficacy and in the benefits that they confer on the host in terms of health.
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