Healthcare Professional Guide to Prebiotics​

A comprehensive guide designed for healthcare professionals with clinical insights, patient resources, and evidence-based recommendations.

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Your 101 Guide to Prebiotics

Gut health is everywhere right now and the term “prebiotic” has become a supermarket buzzword faster than most people got a clear, sourced explanation of what it actually means.

This guide closes that gap. It’s a grounded reference for separating established science from marketing claims: what prebiotics do in the body, which types have real evidence behind them, effective dosing ranges, and where the research is still emerging.

Developed by the GPA, with special contribution acknowledgement to Kara Landau, RD, this guide exists to help provide education and resources on prebiotics. As science evolves in this emerging category, the guide will be updated. It will also be further developed based on field feedback and engagement.

What's Inside the Guide?

A science-first breakdown:

  • The GPA definition of a prebiotic, and why a global consensus still doesn’t exist

  • A type-by-type reference table covering FOS, GOS, HMOs, inulin, resistant starch, beta-glucan, polyphenols, and more, each with research-backed benefits, clinical dosing ranges, natural sources, and common applications
  • The gut-brain, gut-metabolism, and mood connection, including how short-chain fatty acids like butyrate influence gene expression, inflammation, and insulin sensitivity
  • Food sources and daily intake guidance, with prebiotic fiber content by fruit and vegetable, for real-world patient counseling
  • The current regulatory environment across the U.S., Canada, Australia, and New Zealand
  • GLP-1 therapies and prebiotics: where the science and claims landscape stand today, with a link to GPA’s GLP-1 White Paper for the full breakdown of mechanisms, nutritional gaps, and regulatory claims
  • A glossary of prebiotic and microbiome terminology, from dysbiosis to synbiotics to 16S sequencing
  • Synbiotics 101, including GPA’s expanded definition built for current product innovation

GET THE DOWNLOAD: Healthcare Professional Guide to Prebiotics

Fill out the form below to access the HPC Guide. The GPA is available to schedule meetings to discuss the Guide, its impact, and any questions.

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