It has been conformed that IGF-I can promote skeleton growth, differentiation, participate in glycometabolism, protein metabolism, skeleton and fat metabolism and other biological processes.

• 现己证明IGF-I在人体内有极其重要并且丰富的生物学功能，如促生长、促分化、参与糖代谢、蛋白质代谢、骨骼代谢和脂肪代谢等，与生长激素的作用相类似。