What is Leaky Gut and Why Does It Matter for Your Gut Health?

Leaky gut, also called increased intestinal permeability, means that the lining of your gut becomes less effective at keeping unwanted substances out of your bloodstream. Normally, your gut lining acts as a barrier, allowing nutrients through while blocking toxins, bacteria and undigested food particles. When this barrier weakens, it can let these substances pass through, which may trigger immune reactions and inflammation.

Leaky Gut

How Does Leaky Gut Affect Your Body?

A compromised gut barrier can lead to a range of symptoms, including bloating, abdominal discomfort, food sensitivities, fatigue and skin issues. Some people experience changes in bowel habits, such as diarrhea or constipation. Because the gut is closely linked to your immune system, a leaky gut may also contribute to immune-related problems and low-grade inflammation.

What Causes Leaky Gut?

Several factors can weaken your gut barrier. These include a diet high in processed foods, excessive alcohol use, chronic stress, infections and certain medications such as non-steroidal anti-inflammatory drugs (NSAIDs). Imbalances in gut bacteria, known as dysbiosis, can also play a role. Addressing these factors is key to supporting a healthy gut lining.

How Can Diet Help Support Gut Barrier Function?

Eating a diet rich in whole, unprocessed foods supports your gut lining. Fiber from fruits, vegetables, legumes and whole grains helps feed beneficial gut bacteria, which in turn produce short-chain fatty acids that strengthen the gut barrier. Certain nutrients, such as zinc, vitamin A and omega-3 fatty acids, are also important for gut health. Limiting added sugars, processed foods and alcohol can further protect your gut lining.

What Foods and Ingredients Should You Pay Attention To?

Some people with leaky gut notice that certain foods trigger symptoms. Common culprits include gluten, high-FODMAP foods, dairy, food additives and highly processed ingredients. It can help to keep a food diary and learn which foods your body tolerates best. On Bowelbook, you can explore detailed information about individual ingredients, including their effects on gut health, FODMAP content, histamine levels and more.

How Can You Start Improving Your Gut Health?

Begin by focusing on a varied, plant-rich diet and minimizing processed foods. Include plenty of fiber, fermented foods and healthy fats. Manage stress, get enough sleep and stay active, as these lifestyle factors also support your gut barrier. If you want to learn more about how specific foods, fibers, prebiotics or dietary patterns affect your gut, Bowelbook offers in-depth guides and ingredient lists to help you make informed choices.

Summary

  • Leaky gut means your gut lining is less effective at blocking unwanted substances.
  • Symptoms can include digestive issues, fatigue, skin problems and food sensitivities.
  • Diet, stress, medications and gut bacteria imbalances can all contribute.
  • A whole-food, high-fiber diet and healthy lifestyle support gut barrier function.
  • Bowelbook provides detailed ingredient information and practical tips for gut health.