The clinical strategy of monitoring and modulating the circulating levels of Insulin-like Growth Factor 1 (IGF-1) to achieve specific health or performance outcomes, particularly in the context of growth hormone optimization or anti-aging protocols. Precise management is essential due to IGF-1’s potent anabolic and mitogenic properties. It requires regular laboratory assessment and careful therapeutic adjustment.
Origin
The concept arises from the discovery and characterization of IGF-1, a polypeptide hormone structurally similar to insulin, whose concentration is primarily regulated by growth hormone (GH) signaling in the liver. Clinical management became necessary with the advent of GH therapies and a deeper understanding of its systemic effects on growth and cellular proliferation. The goal is to optimize the GH-IGF-1 axis.
Mechanism
IGF-1 is the primary mediator of the systemic effects of Growth Hormone, acting via its own receptor to promote cell division, differentiation, and tissue growth in numerous organs, including muscle and bone. Management protocols typically involve adjusting GH secretagogues or exogenous GH dosing, along with nutritional interventions. The aim is to maintain serum IGF-1 within a range that maximizes anabolic benefits while mitigating potential risks associated with excessive cellular proliferation.
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