Summary
This paper by Gibson et al., published in Nature Reviews Gastroenterology & Hepatology, presents an updated consensus definition of a prebiotic as 'a substrate that is selectively utilised by host microorganisms conferring a health benefit'. The revision broadens the original 1995 definition to encompass non-carbohydrate compounds and body sites beyond the gut, whilst retaining scientific rigour around evidence requirements. The article is likely to serve as a foundational reference for researchers, clinicians, and food scientists working with functional food ingredients and microbiome-targeted interventions.
UK applicability
The consensus definition established in this paper is internationally applicable and has been widely adopted in UK and European food science, clinical nutrition, and regulatory contexts, including those relevant to EFSA health claim assessments and Public Health England guidance on gut health.
Key measures
Criteria for prebiotic classification; evidence thresholds for gut microbiota modulation; health benefit substantiation across candidate substrates
Outcomes reported
The paper reports an expert consensus on a revised, broadened definition of prebiotics, extending the concept beyond dietary fibre to include other selectively utilised substrates that confer a health benefit via modulation of the gut microbiota.
Topic tags
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