Your body makes its own collagen, but production declines steadily from your mid-twenties, which is why food sources, supplements and supportive habits all matter. Below are the most reliable ways to keep collagen levels healthy, from traditional foods to modern collagen supplements.
Food Sources of Collagen
Bone Broth
Bone broth is the most concentrated natural source of dietary collagen. Slowly simmering bones and connective tissue for 12 to 48 hours converts their collagen into gelatin rich in glycine, proline and hydroxyproline, along with minerals like calcium and magnesium. Quality broth sets into a firm gel when cooled, a quick test of its collagen content.
Fish and Seafood
Marine collagen from fish skin and bones has a smaller molecular size that may absorb more easily than land-animal collagen. Small whole fish such as sardines and anchovies, and traditionally fish-head soups, deliver substantial marine collagen.
Organ Meats and Connective Tissue
Cuts that modern diets discard, including skin, cartilage and organ meats, are concentrated in collagen and the cofactors needed to use it. Liver, for example, is rich in vitamin A and copper, both essential for collagen production.
Collagen Supplements
Hydrolysed Collagen Peptides
The most researched form, hydrolysed collagen (collagen peptides) is broken into small, easily absorbed fragments. It is flavourless, dissolves in hot or cold liquids, and is the simplest option for daily use.
Marine vs Bovine
Marine collagen is predominantly Type I, making it well suited to skin, hair, nail and bone support. Bovine collagen supplies both Type I and Type III for broader tissue support. Marine sources also tend to use fish-industry by-products, a more sustainable choice.
Undenatured Type II
This specialised joint-focused form keeps its natural triple-helix structure and works through immune modulation at very small doses (around 40 mg daily) rather than supplying building blocks.
Choosing a Quality Product
Look for third-party testing, transparent sourcing, and peptide molecular weights in the 2,000 to 5,000 dalton range for good absorption.
Lifestyle Factors That Support Collagen
Exercise
Weight-bearing and resistance training mechanically stimulate collagen synthesis in bones, tendons and ligaments. A varied programme supports collagen across different tissues.
Sleep
Most collagen synthesis happens during deep sleep, when growth-hormone release peaks. Consistent, good-quality sleep is one of the simplest ways to protect collagen.
Stress Management
Chronically high cortisol breaks collagen down and slows new synthesis. Meditation, breathing exercises and moderate exercise all help keep cortisol in check.
Sun Protection
UV radiation is a leading cause of collagen breakdown. Daily broad-spectrum sunscreen, protective clothing and shade preserve existing collagen. Supporting your antioxidant defences further limits environmental damage.
Nutritional Cofactors
Vitamin C
Vitamin C is essential: without it the body cannot stabilise collagen, no matter how many amino acids are available. Citrus, berries, peppers and leafy greens are good sources, and supplementation supports synthesis during stress or intense activity.
Key Minerals
Zinc and copper act as cofactors for collagen-building enzymes, iron supports the same hydroxylase reactions as vitamin C, and manganese and silica contribute to connective-tissue strength.
Putting It Together
The best results come from combining approaches: supplying collagen and its cofactors, protecting existing collagen from UV and stress, and supporting synthesis through exercise and sleep. Pairing a collagen supplement with vitamin C is a simple, effective place to start, and helps maintain firmer, healthier skin as part of any anti-ageing routine.
