Osteoprotegerin

Osteoprotegerin (OPG) is a protein produced by various cells in the body, including bone cells. It plays a crucial role in bone health by acting as a decoy receptor for a substance called RANKL, which is involved in bone remodeling. By binding to RANKL, OPG helps prevent the formation of cells that break down bone, thereby promoting bone density. In essence, OPG protects bones from excessive loss, contributing to overall skeletal strength and health. Its levels can be influenced by various factors, including hormones, aging, and certain diseases.