Collagen is the most abundant protein in the human body. It provides structural strength in human tissues, including heart and blood vessels, eyes and skin, cartilage and bone. When muscles, ligaments, tendons and even large organs are built with structurally defective collagen, there can be systemic weakness and instability evident throughout. Connective tissue disorders such as Ehlers-Danlos syndrome cause multiple manifestations that affect many functions of the human body.
The Ehlers-Danlos National Foundation