Prebiotics, probiotics, synbiotics and postbiotics

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Probiotics are live microorganisms that provide a health benefit when taken in adequate amounts. Prebiotics are substances selectively used by the body's microorganisms to provide a health benefit. Synbiotics are mixtures of live microorganisms and substrates selectively used by the host's microorganisms that provide a health benefit. Postbiotics are preparations of inactivated microorganisms or their components that provide a health benefit.