Optimizing Gut Health for Longevity: The Importance of GI and Microbiome Functional Profiling
Companion Guide
This companion guide builds on key research and concepts discussed in the recent conversation between Dr. Kara Fitzgerald and Dr. Tom Fabian.
Gut health is evolving.
The conversation is shifting from a focus on microbiome composition alone to a more complete understanding of gastrointestinal function, host response, and metabolic activity. This reflects a growing recognition that long-term health is shaped not just by which microbes are present, but by how the gut system functions as a whole.
The research below highlights this transition toward functional, systems-based approaches to gut health assessment and clinical care.
Research Driving the Shift in Gut Health Assessment
ISAPP Consensus Statement on Gut Health
A recent consensus statement reinforces that gut health assessment requires measurable indicators of gastrointestinal function, bringing clinical context beyond microbiome composition alone.
From Microbiome to Metabolism: Bridging the Translational Gap
The next phase of microbiome science is moving toward functional, systems-based, and personalized approaches to better understand long term health and disease.
Rethinking Microbiome Health Through Functional Dynamics
Emerging research reframes gut health as a dynamic, adaptive system, shifting focus from static microbial data to functional integrity and resilience.
From Microbiome Composition to Functional Gut Health
Together, these publications reflect a clear shift in how gut health is understood and evaluated.
Rather than focusing only on microbial presence, current approaches emphasize measurable gastrointestinal function, system-level interactions, and the gut’s ability to maintain balance over time. This evolution supports more precise assessment and more personalized clinical decision making.
Functional Gut Health Testing in Clinical Practice
GI-MAP® Stool Test
GI-MAP is a comprehensive stool test that evaluates microbial presence, pathogenic organisms, and key markers of digestion, inflammation, and immune function.
StoolOMX™ Add-on
The StoolOMX add-on expands GI-MAP testing by evaluating bile acids and short chain fatty acids, providing deeper insight into gastrointestinal physiology and metabolic activity.
A Systems Based Approach to Gut Health and Longevity
As the field moves toward functional and systems-based models of gut health, practitioners need tools that go beyond microbiome composition to quantitatively assess gastrointestinal function and guide targeted interventions.
GI-MAP provides a comprehensive foundation for gut health assessment, while the StoolOMX add on extends this view with functional and metabolic insight, supporting a more complete and clinically actionable understanding of gastrointestinal health.