Leaky Gut 101: Your Gut is Not Inside Your Body

Here’s something you might not think about — but it’s biologically accurate.

The lumen of your digestive tract (the space where food travels) is technically topologically outside your body. It’s a long tube that passes through you, but until nutrients cross the intestinal lining and enter your bloodstream or lymph, they’re still “external.” Your body has to decide what to let in.

That’s why the gut lining is such a critical barrier. When it’s healthy and intact, it absorbs nutrients while keeping larger particles, bacteria, toxins, and undigested food out. When it becomes “leaky,” things slip through that shouldn’t, triggering inflammation, immune chaos, and all the downstream symptoms we see.

This is why eating real food, spices, and herbs that support the barrier — instead of damaging it — is so powerful. Diet truly shapes the entire ecosystem inside (and beyond) the gut.

Healing the Gut Lining

Your gut lining is the intelligent gatekeeper that decides what gets absorbed into your body. Give it the materials it needs to keep the gate strong and leak-proof.

Best foods / supports for repairing the lining:

• Bone broth (especially long-simmered from good bones) — rich in collagen, gelatin, glycine, and glutamine. It directly provides the building blocks for tight junctions in the intestinal wall. This is one of the most powerful traditional healers.
• Cooked and raw cabbage (sauerkraut or lightly steamed) — high in glutamine and sulfur compounds.
• Kefir (homemade or good quality) —  living probiotics, enzymes, and lactic acid that restore balance and support the mucosal lining.
• Raw grass fed milk (if it agrees with you) — contains bioactive compounds, enzymes, and immunoglobulins that support gut repair.
• L-glutamine  — fuel for intestinal cells. It helps rebuild the tight junctions, especially helpful after stressors like travel, antibiotics, or rich foods — I saw it work surprisingly fast on my own digestion during last year’s Tijuana trip. (I shared the full story in my earlier L-glutamine post you can see here: https://mohrhealthyliving.com/l-glutamine-saved-my-gut/

Other strong supporters:

• • Zinc (from food or a good picolinate/amino acid chelate) — critical for tight junction repair. Pumpkin seeds, grass-fed beef, and oysters.
  • Vitamin A from liver or cod liver oil — helps maintain and repair the mucosal lining.
  • Glycine & Proline (abundant in bone broth and collagen) — direct building blocks for the intestinal wall.
  • Fermented foods beyond kefir: homemade sauerkraut, kimchi, or fermented veggies — they provide both probiotics and the metabolites that strengthen the barrier.
  • Aloe vera inner leaf gel (small daily amount) — very soothing and promotes mucosal healing.
  • Deglycyrrhizinated licorice (DGL) — helps coat and heal the lining without the blood pressure issues of regular licorice.
  • Slippery elm or marshmallow root tea — creates a gentle protective layer.

• Collagen/gelatin powders or homemade broths — rich in glycine, proline, and glutamine that help repair and strengthen the intestinal lining and support tight junction integrity.

What’s harmful and why:

• Seed oils (canola, soybean, sunflower, etc.) — highly inflammatory and damage the delicate lining.
• Excessive processed sugar and refined carbs — feed the wrong microbes.
• Too much alcohol, harsh spices, conventional/factory pork, NSAIDs and other pharma drugs, and glyphosate.

Small consistent changes with real food can make a big difference. Your body knows how to heal when you give it the right support.

What’s one thing you’re already doing (or ready to try) for your gut lining? Share below — I read every comment. 💜 

Recommended Products: (If you can’t find what you need just ask!

https://docs.google.com/document/d/1n6Lm_LTMciv36IjarjuxU49sIRr45v98BXUDI1ueoDo/edit?usp=sharing