What is the primary function of collagen in the body?

Collagen plays a vital role in the body primarily due to its function in providing structural support. It is the most abundant protein in the human body and is a crucial component of connective tissues, such as tendons, ligaments, skin, and cartilage. Collagen fibers form a scaffold that determines the strength and structure of these tissues, allowing them to resist stretching and tearing. This structural support is essential for maintaining the integrity of organs and systems, contributing to overall physical stability and function.

While collagen has secondary roles in processes such as wound healing and tissue repair, its main purpose lies in being the foundational protein that holds various structural components together. This focus on structure differentiates it from functions like insulation, shock absorption, or energy storage, which are not the primary roles of collagen in the body.