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Gut & Microbiome
The most-studied internal ecosystem
Your gut is home to trillions of microorganisms that influence digestion, immune function, mood, and metabolic health. Fiber, fermented foods, antibiotics, stress, and sleep all shape this ecosystem.
What it needs
- Diverse plant fiber (30+ types weekly)
- Fermented foods if tolerated
- Regular meal timing
- Adequate sleep and stress management
- Minimal unnecessary antibiotic exposure
What wrecks it
- Ultra-processed food dominance
- Chronic stress and poor sleep
- Repeated broad-spectrum antibiotics
- Excessive alcohol
- Low fiber intake
Indicators to observe
- Digestive regularity and comfort
- Food tolerance patterns
- Bloating and inflammation signals
- Stool consistency (Bristol scale)
- Microbiome diversity (if tested)
What the evidence shows
The gut microbiome is among the most studied internal ecosystems. Strong cohort evidence links fiber diversity to reduced all-cause mortality. Stress-sleep-gut connections are well-established mechanistically.
Open questions
- Optimal probiotic strains for specific conditions
- Long-term effects of peptide therapies on gut barrier
- Individual microbiome response to dietary interventions