... human bodies and can be found in the skin, joints, teeth, bones, tendons, and blood vessels. ... keep it elastic. Collagen also helps keep the joints fluid, and teeth and bones strong. Curing ... body tissues. It is found in blood vessels, bones, joints, cartilage, cornea, ligament, skin, tendon. The body ... strong effect on keeping young* Helps keep the joints fluid, and teeth and bones strong* The problem ...