IGF-1, or Insulin-like Growth Factor 1, is a protein that plays a crucial role in growth and development. It is primarily produced in the liver and is stimulated by growth hormone (GH). IGF-1 helps promote cell growth, regeneration, and repair, making it important for muscle and bone health. In addition to its growth-promoting effects, IGF-1 also influences metabolism and has been linked to various health conditions. Abnormal levels of IGF-1 can be associated with diseases such as diabetes and certain types of cancer. Understanding IGF-1 is essential for research in growth disorders and metabolic diseases.