// GUT HEALTH

Gut Health

Microbiome, gut-brain axis, intestinal permeability, immune regulation

Your gut wall is a single cell layer thick — the only barrier between your microbiome and your bloodstream. When tight junctions break down (intestinal permeability), bacterial endotoxins like LPS enter circulation, triggering systemic inflammation that affects the brain, skin, metabolism, and immune function.

GUT BARRIER INTEGRITYHEALTHYCOMPROMISEDLUMENMICROBIOMEDYSBIOSISBARRIEREPITHELIAL BARRIERTight junctions intact (claudin, occludin, ZO-1)TIGHT JUNCTIONS \u2193Permeability increased \u00B7 Gaps in barrierBLOODPROTECTEDLPSLPSLPSLPSLPS TRANSLOCATION70-80% of immune cells reside in GALT \u00B7 Vighi et al., 2008500M neurons \u00B7 "Second brain" \u00B7 100T organismsGut-brain axis: bidirectional communication via vagus nerve, immune signaling, and metabolites

Mechanism

DysbiosisSCFA \u2193Tight junctions \u2193 (claudin, occludin, ZO-1)Intestinal permeability \u2191LPS \u2192 TLR4 \u2192 NF-\u03BABSystemic inflammationBrain \u00B7 Skin \u00B7 Metabolism \u00B7 Immune dysfunctionGut-brain axis \u00B7 Vighi et al., 2008
70-80%

of your immune cells reside in the gut-associated lymphoid tissue (GALT) — your gut is your largest immune organ

Vighi et al., Clinical & Experimental Immunology 2008

// Weekly Intelligence

Don't guess. Understand.

Every week, we pick one study that changes how you think about your health. We explain the biology, grade the evidence, and tell you exactly what it means — years before your doctor hears about it.

No spam. Ever. Unsubscribe anytime. No products. Ever.