Probiotic bacteria have become increasingly popular during the last two decades as a result of the continuously expanding scientific evidence pointing to their beneficial effects on human health. The term probiotic was initially used in the 1960s and comes from a Greek word meaning “for life.”
Probiotics have been defined as “live microorganisms which when administered in adequate amounts confer a health benefit on the host”. Probiotics exert their beneficial effects through various mechanisms, including lowering intestinal pH, decreasing colonization and invasion by pathogenic organisms, and modifying the host immune response.