Bone Broth for Gut Health: What Glutamine, Glycine, and Gelatin Actually Do

Gut health is the single most common reason Australians buy bone broth. According to industry data, approximately 41% of bone broth consumers cite gut health support as their primary motivation. (Global Growth Insights, 2026.) The interest is understandable. The gut lining is a single layer of epithelial cells that forms the body's largest interface with the external environment, and its integrity affects everything from nutrient absorption to immune function.

But the conversation around bone broth and gut health is frequently clouded by overclaiming on one side and dismissal on the other. This article takes a measured, evidence-based approach: here is what bone broth actually contains that is relevant to digestive health, here is what the science says about each compound, and here is where the honest limits of the evidence sit.

The Gut Barrier: Why It Matters

The intestinal epithelium is a single-cell-thick barrier that separates the contents of the digestive tract from the bloodstream. This barrier is held together by tight junction proteins that control what passes through and what does not. When the integrity of this barrier is compromised, a condition researchers describe as increased intestinal permeability, larger molecules including bacterial endotoxins can pass into the bloodstream and trigger systemic inflammatory responses. (Horowitz et al., Nature Reviews Gastroenterology and Hepatology, 2023.)

The integrity of this barrier depends on the constant renewal of epithelial cells, adequate amino acid supply for tight junction protein synthesis, and a healthy mucus layer. Several of the compounds found in bone broth are directly relevant to these processes.

Glutamine: The Gut Lining's Primary Fuel

Glutamine is a conditionally essential amino acid and the primary energy source for enterocytes, the cells that line the small intestine. It is released into bone broth during the long simmer from connective tissue and muscle residue on the bones. A 2024 systematic review and meta-analysis published in Amino Acids analysed clinical trials on glutamine supplementation and intestinal permeability. The review concluded that glutamine supplementation can improve gut barrier function in adults, with particular relevance for individuals under physiological stress. (Hallajzadeh et al., Amino Acids, 2024.)

Bone broth is a whole-food dietary source of glutamine. It does not deliver the concentrated therapeutic doses used in clinical trials (typically 20 to 30g per day), but it contributes meaningfully to overall dietary glutamine intake as part of a varied whole-food diet. The advantage of food-sourced glutamine is that it arrives within a complex matrix of other amino acids, gelatin, and minerals that work synergistically.

Glycine: Anti-inflammatory and Gut-Protective

Glycine is the most abundant amino acid in gelatin and one of the primary compounds released during bone broth production. Beyond its structural role in collagen synthesis, glycine has documented anti-inflammatory properties. Research has shown that glycine can modulate cytokine production and reduce inflammatory signalling in the gut. (Wang et al., Current Opinion in Clinical Nutrition and Metabolic Care, 2013.)

Glycine also contributes to the synthesis of glutathione, the body's primary endogenous antioxidant, which plays a protective role in the gut lining. A 2021 mouse study published in Nutrients found that gelatin-derived amino acids, including glycine, demonstrated anti-inflammatory effects that may help reduce damage to the gut associated with inflammatory conditions.

Gelatin: Structural Support for the Gut Lining

Gelatin is the cooked, denatured form of collagen. It is what gives properly made bone broth its characteristic body and its ability to set when refrigerated. Gelatin contains glycine, proline, and hydroxyproline in high concentrations, and early research suggests these compounds may influence tight junction function under inflammatory conditions. (Ecotraders / Dr McDougall, 2026.)

The practical indicator of gelatin content is the gel test: refrigerate your bone broth. If it sets to a jelly-like consistency, the gelatin content is meaningful. If it stays liquid, the broth was not simmered long enough or did not contain sufficient collagen-rich bones. Byron Bay Bone Broth gels. Every batch.

What Bone Broth Is Not?

Bone broth is not a treatment for leaky gut syndrome, irritable bowel syndrome, inflammatory bowel disease, or any other diagnosed condition. These are complex medical conditions that require professional assessment and management. The compounds in bone broth, glutamine, glycine, proline, and gelatin, are nutritional building blocks that contribute to normal digestive function as part of a whole-food diet. That is a sufficient and accurate claim.

The honest framing is this: bone broth provides the amino acids and gelatin that the gut lining uses for repair and maintenance, delivered in a whole-food format with high bioavailability. It is not a cure. It is a food that supports the body's own processes when consumed consistently as part of a broader approach to digestive wellness.

How to Use Bone Broth for Digestive Wellness?

Consistency matters more than volume. One cup of bone broth daily as a warm drink, or used as a cooking liquid throughout the week, provides a steady supply of glutamine, glycine, and gelatin to support ongoing gut barrier maintenance. Byron Bay Bone Broth is available as a powder sachet that dissolves in hot water, making daily use practical and simple.

For a more comprehensive approach, pair bone broth with BBBB Organic Chicken Liver Capsules. The capsules contribute heme iron, B12, folate, and zinc, all of which support normal cell division and immune function in the gut lining. The Founders Club bundle (three bottles of capsules plus a bone broth sachet pack, 20% off on subscription) provides a quarterly supply of both products.

Frequently Asked Questions

Does bone broth help with gut health?

Bone broth is a whole-food source of glutamine, glycine, and gelatin, which are amino acids and proteins the gut lining uses for maintenance and repair. A 2024 systematic review in Amino Acids confirmed that glutamine supports gut barrier function. Bone broth is not a treatment for any condition, but it contributes nutritional building blocks relevant to digestive wellness.

How much bone broth should I drink for gut health?

One cup daily is a practical starting point. Consistency is more important than volume. Use it as a warm drink or as a cooking liquid. BBBB bone broth powder dissolves in hot water for convenient daily use.

Does bone broth heal leaky gut?

We do not make this claim. Increased intestinal permeability is a complex condition with multiple contributing factors. Bone broth provides glutamine and gelatin, which are amino acids relevant to gut barrier maintenance, but it is not a standalone treatment. Consult a healthcare practitioner for any persistent digestive concerns.

What makes BBBB bone broth good for the gut?

BBBB bone broth is slow-simmered for 18+ hours from certified organic, pasture-raised bones, which produces meaningful gelatin content (it gels when refrigerated). The long simmer extracts glutamine, glycine, proline, and naturally occurring minerals in a whole-food format.

Where can I buy organic bone broth in Australia?

Byron Bay Bone Broth is available online with delivery across Australia. The Founders Club subscription offers the best value at 20% off. Visit the Byron Bay Bone Broth website to shop.

References

• Global Growth Insights. Bone Broth Market Report 2025 to 2026. globalgrowthinsights.com. 2026.

• Hallajzadeh J et al. A systematic review and meta-analysis of clinical trials on the effects of glutamine supplementation on gut permeability in adults. Amino Acids. 2024;56:69.

• Horowitz A, Chanez-Paredes SD, Haest X, Turner JR. Paracellular permeability and tight junction regulation in gut health and disease. Nature Reviews Gastroenterology and Hepatology. 2023;20:417 to 432.

• Kouta A et al. Bone broth as a functional food and its potential therapeutic properties. EMJ Reviews. 2025.

• Wang W et al. Glycine metabolism in animals and humans: implications for nutrition and health. Amino Acids. 2013;45(3):463 to 477.