Collagen is the most abundant protein in the human body, providing structural support for skin and aiding blood clotting. In recent years, it has gained widespread popularity as a nutritional supplement and key ingredient in shampoos and body lotions.
Collagen belongs to the family of structural proteins, often appearing in fibrillar form—long filaments that give tissues mechanical strength against stretching. It comprises about one-third of the body's total protein, forming the foundation of bones, skin, muscles, tendons, and ligaments. You'll also find it in blood vessels, the cornea, and teeth.
Think of collagen as the "glue" holding these tissues together—its name derives from the Greek word "kólla," meaning glue.
Key takeaways: Collagen is a vital structural protein essential for bones, skin, tendons, and ligaments.
There are at least 16 types of collagen, with Types I, II, III, and IV being the most prominent. Each has a unique structure and location; for instance, Type I supports skin, tendons, bones, and the cornea, while Type III appears in the cardiovascular system.
Factors that damage collagen:
Avoid these collagen-depleting habits:
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Autoimmune conditions like lupus can also degrade collagen.
Hydrolyzed collagen (collagen peptides) and gelatin—cooked collagen—have risen in popularity. These broken-down forms are easily absorbed and offer benefits such as:
Collagen is a cornerstone protein structuring key body parts. While certain foods and nutrients support natural production, supplements provide targeted benefits.
