Gut Health Check: A Simple Reflection Tool
The Gut Health Check is conceptually informed by the six-domain framework outlined by the International Scientific Association for Probiotics and Prebiotics (ISAPP), which recognises gut health as a multidimensional construct encompassing: 1) digestive function, 2) microbiome activity, 3) barrier integrity, 4) immune function, 5) metabolism, and the 6) gut–brain axis.1,2
However, as many of these domains require specialised or not yet widely validated measures, this tool is intentionally limited to a consumer-friendly reflection of aspects that can be captured through self-report—primarily digestive function (including motility, informed by the Bristol Stool Chart), gut–brain axis interactions, and key lifestyle factors such as sleep, physical activity, and dietary diversity.
In clinical practice, gut health assessment relies on patient-reported symptoms to distinguish normal variation from clinically relevant concerns, with investigations used when appropriate for further clarification. Symptom impact on daily life and quality of life often carries greater weight than biomarker-based measures.1 In this context, the Gut Health Check is designed as a structured, non-diagnostic reflection tool to support awareness and discussion, providing a simple score, plain-language interpretation, and targeted suggestions rather than a comprehensive assessment.
Download the reflection tool here below:
Scope and limitations
This tool is designed for general reflection only. It does not diagnose gastrointestinal conditions, replace validated clinical tools (e.g. IBS-SSS, GSRS), assess disease activity or severity, and include objective physiological or biomarker data. Given the complexity of gut health and the lack of a single standardised metric, comprehensive assessment should integrate validated symptom tools, clinical history, and (where relevant) objective testing.1
How it can be used in practice
- Pre-consult: Patients complete the tool to reflect on symptoms and habits
- During consult: Use responses to guide discussion and identify key focus areas
- Education: Reinforce the multifactorial nature of gut health
Appropriate use cases
This tool may be suitable for:
- General population or preventive health settings
- Early-stage consultations
- Clients seeking a broad overview of gut health
Supporting resources
The accompanying “Foundation for a Healthy Gut” resource provides practical, evidence-informed strategies aligned with the domains assessed in this tool. It can be used to reinforce key messages and support ongoing behaviour change between consultations.
References:
- Marco ML, Cunningham M, Bischoff SC, et al. The International Scientific Association for Probiotics and Prebiotics (ISAPP) consensus statement on the definition and scope of gut health. Nat Rev Gastroenterol Hepatol. Feb 2026. doi:10.1038/s41575-026-01176-x
- Everyone Wants It, But What Is it? Understanding how “Gut Health” is Defined and Implications for Nutrition Professionals – IAFNS. IAFNS. Published November 10, 2025. Accessed April 28, 2026. https://iafns.org/event/everyone-wants-it-but-what-is-it-understanding-how-gut-health-is-defined-and-implications-for-nutrition-professionals/