Copper Proteinate (Cu 8-10%): Copper is a trace mineral found in all body tissues. It is vital in making elastin, a chief component of the elastic muscle fibers found throughout the body, especially in the heart and lungs. It is needed to build strong bones, connective tissue and joints. Copper is needed for the proper function of the enzyme lysyl oxidase, which is required in the cross linking of collagen and elastin. Copper deficiency is the major known cause of aortic aneurysms in a wide variety of animals, and evidence strongly links it to aortic aneurysms in humans.