The most abundant protein in the human body is collagen, which makes up about 30% of the total protein content. Collagen is a structural protein found in connective tissues, including skin, bones, tendons, and ligaments. It plays a crucial role in providing strength, elasticity, and support to various tissues throughout the body. Collagen is vital for maintaining skin health and joint function, contributing to wound healing as well. With age, the production of collagen decreases, which can lead to signs of aging such as wrinkles and reduced joint flexibility, highlighting its significance in overall health.