Even if l-arginine is more known for it's incredible effects on the cardiovascular system, more and more studies reveals how we can benefit from l-arginine supplementation in other ways as well.
Collagen is a protein which is a fundamental component of various connective tissues (such as cartilage) and bone. Arginine supports the production of collagen and is therefore an important contributor to bone growth. In turn, arginine supports the growth of the osteoblasts which form the bone mass. A study from 2002 has proven that an arginine deficiency, especially in older women, can be the cause of the emergence of osteoporosis.
Ammann, P., Laib, A., Bonjour, J.-P., Meyer, J. M., Rüegsegger, P. & Rizzoli, R. (2002) Dietary essential aminoacid supplements increase the bone strength by influencing bone mass & bone microarchitecture in an isocaloric low-protein diet, Journal of Bone and Mineral Research, Volume 17, issue 7, (pp.1264-1272)