IGF 1: Miracle Hormone or Health Hazard? Diet vs Disease The GH IGF 1 axis in ageing and longevity Nature Reviews Endocrinology IGF 1 LR3 The Muscle Building Peptide Everyones Talking About , IGF 1 LR3 is one of the most powerful performance peptides used for muscle growth, recovery, and fat loss. Its a modified version MGF Huma Peptide Most lifters think muscle growth happens during the workout., It doesnt., Growth happens after when repair signals are turned on., Thats where PEG MGF shines., This peptide works at the cellular IGF DES Burnaby Peptides (PC)