IGF-1 is one of a number of Insulin-like growth factors. Insulin-Like Growth Factors are produced by many different tissues and have local paracrine and autocrine effects. (see [[Hormones - Anatomy & Physiology|hormones]] for further details). They bind to carrier proteins to extend their half life in the blood. The '''liver''' is the main source of IGF-1. | IGF-1 is one of a number of Insulin-like growth factors. Insulin-Like Growth Factors are produced by many different tissues and have local paracrine and autocrine effects. (see [[Hormones - Anatomy & Physiology|hormones]] for further details). They bind to carrier proteins to extend their half life in the blood. The '''liver''' is the main source of IGF-1. |