What causes leaky gut syndrome?

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Robynne K. Chutkan, MD
Gastroenterology
There's still much to be learned, but diet, chronic stress, certain medications and bacterial imbalance seem to play important roles. Eating a diet high in refined sugar can lead to overgrowth of yeast species, which has been associated with leaky gut. Preservatives and chemicals in processed foods can damage the lining, and so can consumption of gluten -- a protein found in wheat, rye and barley.

Chronic stress can lead to a weakened immune system, affecting your ability to fight off invading bacteria and viruses and worsening the symptoms of leaky gut. Medications like aspirin and non-steroidal anti-inflammatories (NSAIDs) that can damage the lining of your gut, as well as antibiotics that kill off your essential good bacteria are also associated with increased intestinal permeability. In fact, an imbalance between beneficial and harmful species in your gut called dysbiosis is one of the leading theories about what causes increased intestinal permeability. Excessive alcohol consumption, infection with parasites, radiation and chemotherapy can damage the lining of the intestine and are also risk factors.

Continue Learning about Digestive Diseases

Digestive Diseases

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.