What Is Type II Collagen and How Does It Differ From Other Types?
Collagen occurs in several forms throughout the body, and type II collagen is mainly found in cartilage, making it relevant for joint health and physically active people.
Collagen is a structural protein found throughout the body's connective tissue, and it comes in several distinct types distributed across different tissues. Type II collagen is concentrated mainly in cartilage — the specialized connective tissue found in joints that is built to withstand mechanical stress. This is why the type is most often discussed in relation to joint health.
How it differs from type I collagen
Type I collagen is the most abundant form in the body, present in skin, bones and tendons, while type II collagen is specific to cartilage tissue. Because of this, when comparing supplements it matters more to check which collagen type is listed than simply looking for the word "collagen" on the label.
Undenatured collagen
Some supplements use so-called undenatured type II collagen, which retains its natural three-dimensional structure. This differs from hydrolyzed collagen, whose molecules are broken down into smaller peptides during manufacturing. Because of this distinction, two products cannot be compared solely by the milligram amount of collagen listed on the package.
Who might consider it
Interest in type II collagen tends to come from athletes, physically active individuals, people who exercise or run regularly, manual laborers, and older adults whose joints face regular strain. Still, choosing a specific supplement should depend on individual needs.
Some products on the market combine multiple collagen types in a single formula, such as type I together with type II. In such cases, it is worth reviewing the ingredient list, the source of the raw materials, and the recommended daily dose before making a choice.
