Does Leaky Gut Cause Eczema?

Eczema or Dermatitis is actually the name for a group of diseases that cause the inflammation of the skin. When people discuss eczema, they generally refer to the most common form, atopic dermatitis, which is hereditary and affects 17% of Canadians at some point in their lives.

Usually developing in children under 5 or in their infancy, Atopic Dermatitis is characterized by itching, redness, and bumpiness of the skin, usually behind the knees, the inside of the elbows, and on the face, neck, and hands. 

While the causes of eczema aren’t fully known, there is scientific evidence that suggests a link between eczema and the health of the intestinal microbiome. Further research indicates that probiotics rich inLactobacillus acidophilus and fiber-rich foods that feed the colony of gut bacteria can significantly help in the management & prevention of symptoms of atopic dermatitis.

Because food allergies cause flare-ups in many patients, they often ask how food can cause eczema flare-ups without being in contact with their skin in the same way that other triggers do (clothes, weather, dust, etc.). One reason for this could be leaky gut syndrome. Food allergies are generally characterized by inflammation of the intestines, a condition that is also closely associated with leaky gut.

This blog further examines the relationship between gut health, leaky gut, and eczema to see if treating one condition could also help manage the other.

What does “leaky gut syndrome” mean?

Not unlike the skin that prevents foreign particles from being absorbed into the body, our intestines have an extensive lining that forms tight barriers between the intestine and the bloodstream, carefully preventing unwanted particles like food particles, metabolic waste, other microbes, and toxins from entering the bloodstream.

When these tight junctions cease to function properly and the lining develops cracks or holes, the passage of unwanted particles into the bloodstream triggers an inflammatory reaction that also affects the friendly microbes in the gut. This phenomenon is known as leaky gut syndrome.

As the gut is home to a variety of good microbes that are deeply intertwined with the immune system and have many immune cells located in it, it acts as one of the human body’s vital disease-fighting systems. Because leaky gut disrupts what enters the bloodstream and what does not, the body’s autoimmune response is often triggered.

Under normal circumstances, the immune system that would be fighting pathogens like viruses now starts attacking its own healthy tissues and cells. This can lead to chronic inflammation, which is closely associated with many health conditions including eczema, asthma, psoriasis, and even autism.

Is there a connection between leaky gut and eczema?

Increased levels of toxins in the bloodstream due to leaky gut syndrome make the body attempt to eliminate them. As the skin is one of the largest elimination organs of our human bodies, it has been suggested that eczema flare-ups are a sign of the body trying to expel the toxins.

In the same vein, leaky gut syndrome, also known as intestinal hyperpermeability, has been linked to a variety of skin problems, including rashes, eczema, and psoriasis. According to the Atopic Dermatitis forum, several studies have also found a higher prevalence of leaky gut in people suffering from eczema, some showing those links as early as infancy.

A study conducted in the UK found that children suffering from eczema had a significantly higher incidence of the leaky gut when compared to children without eczema. Another study also found a correlation between leaky gut and eczema severity.

Is eczema related to gut health?

Eczema has been linked to an insufficient diversity of gut bacteria in some scientific studies. It is also important to note that due to its involvement in fighting diseases, poor gut health also plays a role in triggering a sensitive immune response, such as in the case of eczema. Researchers also found that the gut bacteria of people with eczema differ from those without, and since using probiotic therapy has been demonstrated to treat symptoms of eczema by altering gut bacteria, it is safe to say that gut health impacts how patients can manage atopic dermatitis.

Can eczema be caused by a leaky gut?

Eczema can be caused by hereditary factors, food allergies, or an overactive immune system. However, since food allergies and autoimmune responses are linked with both eczema and leaky gut syndrome — they are closely associated with each other.

It is also important to recognize the role of poor gut flora in the onset of both conditions. The health of our microbiome can contribute to the health of our intestines, but the opposite is also true, meaning that a leaky gut can lead to an imbalance in microbiome diversity, causing eczema flare-ups.

Research & evidence:

Multiple studies show a strong link between gut health, leaky gut syndrome and atopic dermatitis.

  • Recent discoveries in understanding filaggrin and related proteins in atopic dermatitis (AD) have led to a deeper understanding of the central role that the intestinal barrier plays in this disease. Previously, the focus had been on immune system abnormalities and dysregulations. As opposed to being simply an immune disorder, AD in conjunction with FLG mutations can be attributed to an impairment of the primary barrier with secondary inflammation as a result.
  • In a study of 26 children with eczema, 14 also had increased intestinal permeability. Food allergies or intolerances were cited as the cause of leaky gut, so elimination diets were suggested as a treatment. Results showed that eliminating certain food categories actually improved symptoms.
  • Clinicians often report positive results from their eczema patients who use elimination diets to avoid flare ups caused by food allergies.
  • The findings of a recent study clearly showed a correlation between a gut bacteria called Faecalibacterium prausnitzii and atopic dermatitis. They found that patients exhibited markers of gut epithelial inflammation, which is said to be a cause of intestinal barrier impairment.

Causes of leaky gut

High gluten consumption

In a study published by Columbia University Medical Center researchers, a strong link was revealed between gluten allergies and increased intestinal permeability. Gluten was found to cause leaky gut symptoms in people with celiac disease and irritable bowel syndrome.

On the other hand, the presence of leaky gut in healthy individuals not suffering from these other health conditions remains disputed. However, a study conducted in 2015, concluded that exposure to giladin (a glycoprotein found in gluten) caused intestinal permeability in all people, but affected those with gluten sensitivity and celiac disease more.

A lot of patients with leaky gut, regardless of their sensitivity to gluten, report that they feel better when they don’t eat it — a claim which is now being supported by these studies.

Infections like Candida, intestinal parasites, and small intestine bacterial overgrowth (SIBO)

The yeast Candida lives in the gut together with other microbes. Their existence does not harm the human body when their numbers are healthy. Conversely, candida overgrowth is associated with leaky gut. Lifestyle factors that interfere with the balance of gut bacteria can also lead to candida overgrowth, which can further lead to candida infections, inflammation, and leaky gut syndrome.

Similarly, SIBO or Small Intestinal Bacterial Overgrowth in the small intestine can damage the digestive system and lead to problems such as malnutrition and leaky gut.

Excessive consumption of inflammatory foods

As the leaky gut syndrome is often accompanied by an inflammatory response in the body, many physicians recommend cutting out inflammatory foods such as foods high in gluten, soy, corn, and dairy.

It is true that not every food group will cause inflammation in all individuals, but the goal is to reduce processed sugars and alcoholic beverages to see which trigger inflammatory reactions. In addition, your doctor may recommend a diet high in fiber and vitamins to help combat the effects of eating the Standard American Diet, which is high in fried food and processed sugars.

Long-term use of antibiotics or non-steroidal anti-inflammatory drugs (NSAIDs) such as Aspirin may also cause intestinal permeability.

The excessive use of NSAIDs and antibiotics has long been associated with bleeding and ulcers in the small intestine. In addition, studies have shown that long-term use of these pharmaceuticals can disrupt and change the gut microbiome, which is a major factor in the onset of the leaky gut syndrome.

A number of animal studies show that NSAIDs can compromise the gut lining and increase gluten sensitivity, while another suggests that even a 600 mg dose of aspirin can increase intestinal permeability.

Low levels of Healthy Gut Bacteria

Many links exist between gut health and the prevention of leaky gut as mentioned throughout this blog. To add, according to this article published in 2016, gut microbiome imbalances can trigger an autoimmune response that can lead to inflammation and a leaky gut.

Signs and symptoms of leaky gut syndrome

While the exact cause of Leaky Gut is unclear, the following factors have been found to increase intestinal permeability. Symptoms may differ from person to person, and someone may have several symptoms at once.

  • Stomach pains, especially after eating.
  • Diarrhea, constipation, gas or bloating, inflammatory bowel disease.
  • Nutritional deficiencies due to improper absorption of nutrients.
  • A weakened immune system and frequent illnesses.
  • Headaches, memory loss, and excessive fatigue
  • Skin rashes and problems such as acne, eczema, or rosacea
  • Sugar cravings
  • Symptoms of arthritis or joint pain
  • Anxiety, depression, ADD, ADHD
  • Prevalence of autoimmune diseases such as rheumatoid arthritis, lupus, celiac disease, or Crohn’s
  • Food Allergies
  • Neurocognitive disorders such as mood issues and autism

How do you diagnose a leaky gut?

Though there is no official diagnosis for Leaky Gut Syndrome which can indicate how leaky your gut is, there are other factors that can be tested to find out if you have the condition.

  • Lactulose and Mannitol Test for Leaky Gut: The leaky gut syndrome is associated with two sugars, lactulose, and mannitol, which can be detected through urine analysis. Testing may require the patient to eat these sugars so that the ratio of lactose and mannitol can be determined.
  • Organic acid Mineral and Vitamin Deficiency Test: As nutritional deficiencies are often a critical warning sign of leaky gut syndrome, an organic vitamin, and mineral acid test may be one of the tests your doctor will recommend.
  • Blood Test for Zonulin: Intestinal permeability is only known to be regulated by a protein called zonulin, i.e. when it passes through the intestinal lining, the tight barriers open briefly to allow larger particles to pass through. In genetically susceptible people, it is known to increase intestinal permeability. A blood test can determine if the level of zonulin exceeds the healthy amount.
  • Stool test: This test looks at the condition of the gut and the presence of good and bad bacteria, yeast, parasites, and any other foreign particles that could have contributed to an increase in intestinal permeability.
  • Food Tolerance Test: As food intolerance and allergies are closely linked to leaky gut, this test can be critical to evaluate which foods can trigger an inflammatory reaction in people. In that sense, depending on when the test is done, it can both alert doctors of increased intestinal permeability and also help prescribe diets that can prevent its onset.

Ways to control & treat eczema

Although conventional medicine attempts to treat symptoms of eczema with pharmaceuticals such as a corticosteroid cream or ointment that can moisturize the dry skin, antibiotic creams for bacterial infections, and in severe cases, use of oral corticosteroids — they are linked with severe side effects such as skin thinning, sun sensitivity & cancer risk.

If you have been diagnosed with leaky gut, your doctor may treat the symptoms of leaky gut to help you manage your eczema flare-ups. According to the National Eczema Association, since diet has been linked to both leaky gut syndrome and atopic dermatitis — it should be the first point of intervention.

How do you treat leaky gut eczema?

Determine food allergies or sensitivities

As we have already established, food allergies and intolerances can trigger both leaky gut syndrome & eczema flare ups. By determining food allergies ahead of time, you will know which foods to avoid as your child grows up.

Even if your child outgrows his food sensitivities at some point, avoiding foods such as gluten, soy, dairy as well as foods rich in processed sugars, can help in effectively managing the symptoms of atopic dermatitis.

These foods are all linked to an inflammatory response and eliminating them from your diet is often recommended by medical professionals:

  • Alcohol and Carbonated Beverages
  • Beverages containing caffeine, such as coffee
  • Dairy products, especially cheese and milk
  • Baked goods like cakes, donuts etc.
  • Gluten-containing products and grains, such as wheat & barley
  • Sauces
  • Refined Oils
  • Artificial Sweeteners
  • Mushrooms
  • Nuts
  • Potatoes and Tomatoes
  • Any kind of processed foods (especially canned foods)
  • Certain medications
  • Foods that may cause allergies or sensitivities.

What should I eat if I have eczema?

Foods that optimize the gut flora

Gut flora plays a crucial role in immune system development during childhood. Gut health is also directly linked with prevention of atopic dermatitis and maintaining possible flare ups.

One of the easiest ways to optimize gut flora is to eat food that supports gut health naturally. Some of these include:

  • Fermented vegetables
  • Kefir
  • Kimchi
  • Kombucha
  • Miso
  • Sauerkraut
  • Tempeh

Incorporate foods that have an anti-inflammatory effect

If a treatment plan includes the elimination of foods that cause an inflammatory response, it is likely that your healthcare practitioner will also recommend the intake of foods that are naturally anti-inflammatory. The focus for dietary counseling will also be to recommend foods that naturally improve your overall gut health.

Some of these include:

  • Bone Broth: Bone broth is rich in amino acids, minerals, and gut-healing collagen, providing optimal nourishment to the gut.
  • Turmeric: Aside from being anti-inflammatory, turmeric also acts as a detoxifier.
  • Coconut products such as coconut milk and coconut oil: Coconuts prevent the overgrowth of bacteria, yeast, and fungus in the gut.
  • Fermented foods: Fermented foods help support the growth of good gut flora
  • Variety of Vegetables: An assortment of vegetables in your diet provides your body with a variety of nutrients and a lot of fiber.
  • Fruits with a low Glycaemic Index (GI): Although all fruits provide ample fiber and nutrition, ones with a high GI can cause a spike in blood sugars, which is linked to cellular inflammation. It’s generally better to eat low GI fruits such as strawberries, cherries, grapefruits etc.
  • Sprouted seeds such as chia seeds, flaxseeds, and hemp seeds: Sprouts are easier on the gut than grains. Also, they have fewer lectins (a compound that is associated with leaky gut) as the plant metabolizes lectins as they grow.
  • Herbal teas: Peppermint tea can soothe inflammation, while licorice root may help heal the damaged gut lining.
  • Olives and olive oil: Olives are rich in minerals, vitamins, and dietary fiber. They are great for promoting overall gut health, as long as they are not fried.

Probiotic therapy

Probiotics are excellent for improving gut health since they are made up of healthy microbes that reside in our gut microbiome. Although consumption of fermented foods may help in improving their numbers, additional probiotic supplements can help you manage your leaky gut eczema more effectively.

Supplemental probiotic supplementation can help in strengthening the gut lining and improving the overall digestive function when used along with a healthy diet containing vitamins B6 & C. They are generally safe to consume and can be effective in reducing the immune response of the body. This can help manage eczema in a gentler manner.

Many probiotics are available today, but those that contain Lactobacillus rhamnosus GG, the most well-researched probiotic bacteria, are recommended. For most people, the recommended amount is between 10 and 20 billion cfus per day, but your doctor may recommend a different amount based on your condition.

Apply natural topical treatments to the skin

As eczema is characterized by dry skin and itchiness, natural topical ointments that help to manage the itchiness may be prescribed by your healthcare practitioner. Special moisturizers that treat dry skin can also be effective in reducing itchiness and redness caused by eczema flare-ups.


Leaky gut is the phenomenon of increased intestinal permeability wherein the junction between the intestine and the gut that prevents spillage of larger particles into the bloodstream is affected. This dysfunction often triggers an inflammation and immune response from the body, which can result in eczema flare-ups.

In general, poor gut health is associated with the onset of both leaky gut syndrome and atopic dermatitis. As such, improving your gut health can be one of the best ways to manage and prevent the onset of both health conditions.

Although clear causes of both conditions are unknown, we do know from enough scientific research that both share an association. Whether leaky gut is the primary cause of atopic dermatitis remains to be established with further research.

Probiotic therapy and a good diet rich in dietary fiber, vitamins & minerals can be effective treatments for both preventing and managing these health conditions.


  • How do you cure gut eczema?

Researchers have proposed that eczema symptoms may be managed by changing gut bacteria or by reducing inflammation in the gut. Probiotics, which are live microorganisms taken by mouth, such as the Lactobacillus bacteria found in unpasteurized milk and yogurt, might help.

  • Can vitamin D help with eczema?


In the winter, eczema is known to flare up, resulting in a condition called winter-related atopic dermatitis. Research has shown that vitamin D intake provides substantial relief from its uncomfortable symptoms.

  • How long does it take probiotics to help eczema?


It’s hard to say how long probiotics may take to help relieve the symptoms of eczema as they are not used as a standalone method in the treatment of eczema.

  • Is Greek yogurt OK for eczema?


Probiotics found in Greek yogurt enhance gut health as well as strengthen an individual’s immune system. If you are not allergic, your doctor may recommend that you eat Greek yogurt regularly to manage atopic dermatitis.  

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