Quick Answer
"Leaky gut" is a simplified term for intestinal permeability — when tight junctions between gut lining cells loosen, allowing substances to pass that shouldn't. It's now recognized in mainstream research as a legitimate condition.
What Is Leaky Gut (Really)
Your gut lining is a single layer of cells with tight junctions between them. These junctions control what passes through. When they loosen:
- Undigested food particles enter bloodstream
- Immune system reacts
- Inflammation increases systemically
The Real Story
This isn't alternative medicine anymore. Research has validated intestinal permeability as measurable and clinically relevant. Key research: zonulin pathway discovered by Dr. Alessio Fasano.
Why It's So Dangerous
The gut lining is the barrier between the outside world and your bloodstream. When compromised:
- Immune activation increases
- Chronic inflammation develops
- Food sensitivities multiply
- Systemic symptoms emerge (fatigue, brain fog, joint pain)
Common Causes
- Chronic stress
- Alcohol excess
- NSAID overuse
- Dysbiosis/SIBO
- Processed food diet
- Infections
Testing Options
- Lactulose-Mannitol test: Direct permeability measurement
- Zonulin: Indirect marker (use as secondary clue)
- Comprehensive stool panel: Assess inflammation and microbiome
Repair Protocol
- Remove triggers (alcohol, NSAIDs, inflammatory foods)
- Support lining repair (zinc carnosine, L-glutamine, butyrate)
- Address underlying causes (SIBO, dysbiosis, stress)
- Support microbiome (appropriate probiotics, prebiotics)
Key Takeaways
- Leaky gut is real and measurable
- It's a barrier problem that creates systemic issues
- Repair requires removing triggers and supporting healing
- Work with a clinician for comprehensive approach
Educational only, not medical advice. Work with a qualified clinician for diagnosis and treatment.