IGF-1
Similar in structure to insulin, insulin-like growth factor-1 plays a prominent role in the regulation of immunity and inflammation, and an essential role in regulating endocrine growth and development. It works together with the growth hormone (GH) and stimulates the liver to produce IGF-1 which reproduces, and regenerates cells and promotes growth and development. Another important function is to strengthen tissues, thereby improving bone density and building muscle, and promoting healing.