IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease IGF 1 Facilitates Cartilage Reconstruction by Regulating PI3K AKT, MAP JIR Dove Medical Press Theres a lot of confusion around peptides and muscle., Heres how I actually think about it., Most peptides dont build muscle directly., They improve the systems that allow muscle to grow., First, A Medical Review of IGF 1 LR3 Dosage, Side Effects and Safety Aspects IGF 1 LR3 PRAMAH THE HAVEN