Digestive
Gut health, the microbiome, and nutrient absorption.
Overview
The digestive system breaks down food, absorbs nutrients, and hosts the gut microbiome — a community of microbes that influences metabolism, immunity, and even mood.
Why it matters
Digestive health affects nutrition, immune function, and metabolic health, and the liver's status (via markers like ALT) is an early window on whole-body metabolic health.
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How this usually unfolds
- Understand the system
- Know the key biomarkers
- Learn the common conditions
- Apply evidence-based interventions
Major functions
- Digestion and nutrient absorption
- Microbiome-driven fermentation
- Barrier and immune interface
- Liver-based metabolism and detoxification
Common conditions
Prevention
- Eat adequate fiber and varied plants
- Maintain a healthy weight (liver)
- Limit alcohol
- Age-appropriate cancer screening
Improvement strategies
- Fiber for regularity and metabolic health
- Weight loss for fatty liver
- Treating the underlying condition
- Reducing alcohol
Explore this system across BioSignal
Related Foundations
Related Signal Records
Related biomarkers
Related peptide families
Related body systems
Related lifestyle interventions
Related diagnostics
Frequently asked questions
Do I need a probiotic?
For most healthy people, a fiber-rich, varied diet supports the microbiome more reliably than a supplement. Specific probiotics help specific conditions — the evidence is strain- and situation-specific.
What does a high ALT mean?
Most often fatty liver linked to weight and insulin resistance, which is frequently improvable with weight loss and activity. New or marked elevations should be evaluated.
Educational information — not medical advice
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