Not sure which collagen is right for you? We break down the key differences between marine and bovine collagen, how it is absorbed, and which one might suit your wellness goals best.
Collagen is the most abundant protein in the human body, acting as the structural glue that holds tissues together, from skin and bones to muscles, tendons, and cartilage. As natural collagen production declines with age, supplementation has become popular for supporting skin, joints, gut health, and more. However, not all collagen is the same. Two of the most common sources are bovine collagen, derived from cows, and marine collagen, derived from fish, and each has unique characteristics.
Bovine collagen is derived from the hides, bones, and connective tissues of cows. By nature, it is rich in Type I, the most abundant collagen in the body, and contains Type III, which supports skin elasticity and connective tissue health. Because it contains both types of collagens, it is regarded as structurally broad-spectrum in its support. The amino acid profile of bovine collagen is essential for connective tissue regeneration, joint cartilage support, tendon and ligament strength, gut lining integrity, muscle recovery, and sleep support.
Marine collagen, by contrast, is almost exclusively Type I. It is derived from fish skin, scales, and bones. The amino acid ratio differs to bovine collagen, and is therefore favoured for skin elasticity, dermal collagen stimulation and anti-aging protocols. While the aging process of the skin is considered complex, a study conducted to examine the effects of marine collagen, has found that the daily supplementation of marine collagen has helped to combat skin aging by minimising oxidative stress and the appearance of wrinkles (https://www.mdpi.com/1660-3397/22/4/159). Marine collagen is therefore essential for skin hydration and elasticity, healthy hair and stronger nails; and is commonly marketed as a beauty collagen.
Neither bovine nor marine is universally superior, they simply serve different priorities. Your choice depends on your goals and preferences. If your focus is enhanced skin hydration, and hair and nail support, opt for marine. If you want broader structural support for joints, muscles and gut, a cost-effective daily supplementation, and a versatile option for overall wellbeing, opt for bovine. Ultimately, the most important factor is consistency. When taken regularly, both bovine and marine collagen provide bioavailable peptides that support the body’s natural collagen production. Choosing a high-quality, hydrolysed collagen that aligns with your goals and using it consistently to support your body from within, is always a worthwhile investment.
Sources:
https://pubmed.ncbi.nlm.nih.gov/38667776/
https://www.frontiersin.org/journals/marine-science/articles/10.3389/
fmars.2023.1245077/full
https://www.mdpi.com/1660-3397/22/4/159
https://onlinelibrary.wiley.com/doi/10.1155/2024/8752787
https://www.mdpi.com/1660-3397/22/4/159