What is Leaky Gut?

Topic Overview

Leaky gut, or increased intestinal permeability, occurs when the tight junctions in the intestinal lining loosen, allowing partially digested food, microbes, and toxins to enter the bloodstream. It is not a formal medical diagnosis, though intestinal permeability is documented in celiac disease and inflammatory bowel disease. Common associated symptoms include bloating, food sensitivities, fatigue, and brain fog.

Table of Contents

1. Topic Overview
2. What Is Leaky Gut?
3. What Causes Leaky Gut?
4. What Are the Symptoms of a Leaky Gut?
5. How to Support a Leaky Gut
6. How Long Does It Take to Heal Leaky Gut?
7. FAQs

What Is Leaky Gut?

Leaky gut, also called increased intestinal permeability, happens when the tight junctions in your intestinal lining loosen. Your gut lining is meant to absorb water and nutrients while keeping larger particles, microbes, and toxins out of your bloodstream. When that barrier becomes more permeable, those particles can pass through, activate your immune system, and contribute to a wider inflammatory response. (1,2)

If conventional medicine has brushed off your bloating, brain fog, or fatigue because your labs look “fine,” I want you to know you are not imagining this. I look at your gut first, because I always say, “The gut is the gateway to health.” I also say, “If your gut is not healthy, neither are you.” Your gut is the foundation of your whole body’s health because 80% of your immune system resides there. Without a healthy gut, you can’t have a healthy immune system. A leaky gut puts you on the Autoimmune Spectrum™, which is why healing your gut is the first pillar of The Myers Way®.

Conventional medicine does not currently recognize leaky gut syndrome as a formal diagnosis. Increased intestinal permeability is a real change in your gut barrier, and it is well documented in celiac disease and inflammatory bowel disease. (1,3) I’m going to walk you through what leaky gut is, why it happens, the symptoms I see most often, and the 4R Approach I use to support your gut lining so you can take back your health.

What Causes Leaky Gut?

Your intestinal lining has many layers of defense, and it is designed to repair itself. Persistent assault can still wear that barrier down. (1)

I start with the foods and infections that keep your tight junctions open:

• Inflammatory and toxic foods, including gluten, grains, and legumes. These foods damage intestinal cells, open the tight junctions of your gut lining, and feed harmful bacteria that can create gut dysbiosis
• Gut infections such as Candida overgrowth, SIBO, and parasites
• Chronic stress, heavy alcohol use, and frequent NSAID medications such as ibuprofen or aspirin (1,2)
• A diet low in fiber and high in sugar and processed fats (2)

When particles cross a compromised barrier, your immune system stays on high alert. That is why I connect leaky gut and autoimmune disease so closely, and why healing your gut comes first. This is not an 80/20 diet. The Myers Way is a way of life, and your health is worth that commitment.

What Are the Symptoms of a Leaky Gut?

There is no symptom unique to intestinal permeability. The signs you notice usually come from injury and inflammation in your gut lining. (1,3)

Symptoms often associated with leaky gut syndrome include:

• Bloating, gas, diarrhea, or abdominal discomfort
• Food sensitivities
• Fatigue
• Brain fog
• Skin concerns

These have many possible explanations. They do not, on their own, mean you have leaky gut. If you have been struggling and feeling overwhelmed by conflicting advice, use these clues as a starting point, not a self-diagnosis. Persistent, severe, or worsening digestive symptoms deserve evaluation by a qualified healthcare professional.

No single validated test currently diagnoses leaky gut syndrome. (3) Research tools include sugar-probe urine tests and blood markers of bacterial products, yet these are not standard in most clinics. (1) I look at the pattern: your digestive symptoms plus food reactions, energy or skin changes, and a history of gut infections, gluten exposure, toxin burden, or autoimmunity.

How to Support a Leaky Gut

I use the 4R Approach to Healing Your Gut: Remove, Restore, Reinoculate, and Repair. This is the protocol inside Pillar I, Heal Your Gut, and the same sequence in my Leaky Gut Support Protocol.

1. Remove the bad. Take inflammatory and toxic foods out of your diet, including gluten, grains, and legumes. Remove intestinal infections such as Candida overgrowth, SIBO, and parasites. If you are not sure which infection is in play, start with the SIBO Quiz. 
2. Restore what’s missing. Everyone needs to restore optimal digestion of proteins, fats, fiber, and carbohydrates by adding digestive enzymes. At a minimum, I recommend adding a complete digestive enzyme. If you want to support healthy stomach acid levels, consider adding Acid Restore with Betaine HCl. To support the breakdown of dietary histamine, consider adding Histazyme in this step. It is formulated with DAO to help break down histamine from foods.
3. Reinoculate and balance with healthy bacteria. Repopulate the good bacteria in your gut with a high-quality probiotic such as Probiotic 100 Billion, then balance your immune system in your gut with beneficial immunoglobulins in ImmuneIG. If you have SIBO, choose a soil-based probiotic such as Primal Earth Probiotic to avoid adding fuel to the fire, then follow with ImmuneIG.
4. Repair the gut. Providing necessary nutrients helps your gut repair itself. Herbs such as slippery elm, marshmallow root, and aloe vera found in Leaky Gut Revive® help produce more mucus, which is the protective barrier in your gut. L-glutamine is a key component of that formula. This amino acid helps nourish and support the integrity of your gut lining.

If you are not having one to three bowel movements per day, consider adding MagMove or Prebiotic Fiber Complete to your daily routine to support regularity and soothe your gut. Adding Paleo Protein also helps your gut barrier function, because it is free from common food triggers. Collagen Protein and Spectrum 5 Collagen® offer similar support. You can also supplement with omega-3s to promote a healthy inflammatory response.

You can review targeted leaky gut supplements that follow this same sequence. Diet and supplements support gut barrier function. They do not replace diagnosis, prescribed care, or work with your practitioner.

How Long Does It Take to Heal Leaky Gut?

There is no universal timeline, and I will not promise you a date. Your intestinal lining is built to replenish itself, yet it cannot fully recover if the assault continues. (1) Timing depends on whether gluten and other inflammatory foods are gone, whether infections are addressed, and how consistently you follow the 4Rs.

This is a commitment. You are worth the investment, especially if you are used to putting everyone else first. Stay with the sequence, and you give your barrier the chance to come back to a more balanced state.

If symptoms are severe, bloody, unexplained, or paired with weight loss, fever, or urgent concern, seek medical care promptly.

FAQs

• What are the symptoms of a leaky gut?
  Bloating, gas, diarrhea, abdominal discomfort, food sensitivities, fatigue, and brain fog are the symptoms people most often connect with leaky gut. These signs are not specific to intestinal permeability, and they can overlap with many digestive conditions. (1,3) Use them as a signal to look at your gut barrier, food triggers, and infections, not as a self-diagnosis.
• How do I know if I have leaky gut?
  You cannot confirm leaky gut from symptoms alone, and there is no standard, validated diagnostic test. (3) Clues include ongoing digestive symptoms, food reactions, and a history of gut infections, inflammatory foods, or autoimmunity. A qualified practitioner can help you evaluate root causes rather than chasing an unproven lab panel.
• How long does it take to heal leaky gut?
  Healing time varies. Your lining can begin to repair once you remove what is injuring it, yet there is no one schedule that fits everyone. (1) Consistency with the 4R Approach, especially Remove and Repair, matters more than a calendar promise.
• What is leaky gut syndrome?
  Leaky gut syndrome is the popular name for increased intestinal permeability: a loosened intestinal barrier that lets larger particles through. It is not currently a formal medical diagnosis, even though permeability itself is real and is documented in several gastrointestinal diseases. (1,3)
• Can supporting my gut lining help if I am on the Autoimmune Spectrum?
  A leaky gut puts you on the Autoimmune Spectrum, because a compromised barrier keeps your immune system activated. Healing your gut is the first pillar of The Myers Way for that reason. Supporting the barrier does not diagnose or reverse an autoimmune disease, and it is not a replacement for your practitioner’s care.

References

1. Cleveland Clinic. "Leaky Gut Syndrome." Cleveland Clinic, last updated April 6, 2022. my.clevelandclinic.org/health/diseases/22724-leaky-gut-syndrome. Accessed on September 9, 2026.
2. Campos, Marcelo. "Leaky gut: What is it, and what does it mean for you?" Harvard Health Publishing, September 22, 2017. www.health.harvard.edu/blog/leaky-gut-what-is-it-and-what-does-it-mean-for-you-2017092212451. Accessed on September 9, 2026.
3. Lacy, Brian E., Journey L. Wise, and David Cangemi. "Leaky Gut Syndrome: Myths and Management." Gastroenterology & Hepatology, May 2024. pmc.ncbi.nlm.nih.gov/articles/PMC11345991. Accessed on September 9, 2026.