IGF 1 LR3 is a powerful growth factor that helps build muscle, burn fat, and speed up recovery. It works by boosting protein synthesis, which helps muscles grow and heal faster. It also improves how Insulin Like Growth Factor Signaling in Alzheimer's Disease: Pathophysiology and Therapeutic Strategies Molecular Neurobiology Springer Nature Link Central IGF1 improves glucose tolerance and insulin sensitivity in mice Nutrition & Diabetes IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease