Evidence-backed FAQ
What are probiotics?
Direct answer
Probiotics are live microorganisms that, when administered in adequate amounts, confer a health benefit on the host.[1]
What the evidence shows
Probiotic effects are strain-specific, so evidence for one strain or product does not automatically apply to another.[1]
Important limitations
The definition does not establish a specific benefit for every product marketed as a probiotic, and a result from one strain should not be generalized to probiotics as a whole.[1]
Related questions
- Why does the strain matter?
- Does every probiotic product have the same evidence?
Read the full evidence summary
This FAQ is the concise answer. The linked research page provides the full study context, populations, doses, outcomes, and limitations.
References
- Expert consensus document. The International Scientific Association for Probiotics and Prebiotics consensus statement on the scope and appropriate use of the term probiotic. Nature Reviews Gastroenterology & Hepatology. 2014. Expert consensus statement View source →