From strong skin, healthy hair and strong nails to supporting joint health, collagen is essential for the body. Marine collagen is attracting particular interest at the moment, and the gut is one of the tissues it is discussed in connection with. Find out what the intestinal mucosa is made of and what role collagen plays as a component of connective tissue in the digestive tract.
The collagen context
Before we look at how marine collagen contributes to gut health, let's first understand what collagen is (source). Collagen is the most abundant protein in the human body and is an essential building block for skin, bones, muscles, tendons, blood vessels and the digestive tract. The intestinal mucosa contains collagen as part of its connective tissue, alongside the epithelial cell layer that lines it.
Marine collagen contains the amino acids proline, glycine and hydroxyproline, which also occur in the collagen structure of the intestinal wall. Collagen peptides supply these amino acids as a dietary component.
Fish collagen: an overview
When it comes to sourcing collagen, options range from beef to pork to fish. However, marine collagen, which is derived from the skin, bones and connective tissue of fish, has recently gained popularity due to its unique benefits (source).
Sustainability of marine collagen
Marine collagen is obtained from fish by-products such as skin and bones that would otherwise be disposed of as waste. This resource-efficient use promotes sustainable sourcing and actively contributes to environmental protection without negatively impacting wild fish populations. The use of by-products eliminates unethical farming practices, making fish collagen an environmentally friendly alternative.
Excellent absorption due to marine collagen peptides
Marine collagen peptides have a low molecular weight, which leads to outstanding bioavailability. This property enables particularly effective absorption and utilization by the body. Studies of marine peptides have mainly measured how quickly they appear in the blood after intake.
Origin from the deep sea - quality and purity
High quality fish collagen is sourced from deep sea fish, minimizing the risk of contaminants and GMOs. Like all collagen, it is rich in glycine, proline and hydroxyproline. This natural origin guarantees a premium fish collagen that meets the highest quality standards and is ideal for health-conscious consumers.
The influence of marine collagen on intestinal health
The gut plays a central role in overall wellbeing, and maintaining its health is crucial for efficient digestion, absorption of nutrients and a robust immune system. Marine collagen is one of the protein sources people add to their diet with the gut in mind, and it is the subject of a growing research literature (source).
Improvement of the intestinal mucosa
The intestinal mucosa contains collagen as part of its connective tissue, and glycine is one of the most common amino acids there. Collagen peptides are broken down in the digestive tract and supply those same amino acids.
Improvement of nutrient absorption
Collagen peptides are broken down in the digestive tract into amino acids and short peptides and absorbed like other dietary proteins. Their amino acid profile is particularly rich in glycine, proline and hydroxyproline.
Support for natural collagen synthesis
With increasing age, the body's own collagen production decreases, which can lead to symptoms such as wrinkles, dry skin and joint pain. Marine collagen supplies the amino acids the body assembles its own collagen from. Studies of collagen peptides have recorded skin elasticity as one of their measures, over periods of several weeks.
Regulation of stomach acid
Collagen peptides are a dietary protein and are digested in the stomach like other proteins. Fish collagen can be included in a balanced diet as a neutral-tasting protein source.
Combine marine collagen supplements with gut-healthy foods
The purest form of collagen is generally tasteless and can therefore be consumed in a variety of ways. Here are some foods that combine well with a collagen product to provide optimal support for gut health.
High-fiber foods
Dietary fiber plays a crucial role in a healthy gut, as it reduces digestive disorders and increases the diversity of the intestinal microbiota. They promote intestinal motility, prevent constipation and support the regular cleansing of the digestive tract. Your daily diet should include fiber-rich foods such as whole grains, beans, lentils, nuts, seeds, fruits and vegetables. These foods help your digestive system to work optimally and stay healthy in the long term.
Probiotic foods
Probiotics are live microorganisms that support the balance of the intestinal flora and promote the growth of healthy bacteria. Probiotic foods such as yoghurt, miso soup and kimchi help to stabilize the intestinal flora and keep the digestive system working smoothly. The regular intake of probiotic foods not only strengthens the immune system in the gut, but also optimizes general digestion - an important building block for sustainable gut health.
Foods rich in plant compounds
A varied, plant-forward diet is regarded as the foundation of gut-friendly eating. Foods such as turmeric, green tea, green leafy vegetables and antioxidant-rich fruits such as blueberries help to reduce inflammation. By eating these foods regularly, you not only support your immune system, but also promote a smooth digestive process and prevent painful complaints.
Conclusion
Marine collagen is highly soluble and supplies the amino acids from which the body's own collagen is built. Research so far has mainly examined how collagen peptides are digested and absorbed.
Sources
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7230273/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6153947/
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9198822/
https://www.sciencedirect.com/science/article/pii/S1756464620305028
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9198822
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8718035/