Insulin like growth factor 1 in articular cartilage repair for osteoarthritis treatment Arthritis Research & Therapy Springer Nature Link What is IGF 1 LR3?, Insulin Like Growth Factor 1 Long R3 (IGF 1 LR3) is a modified version of IGF 1 with a longer half life, making it significantly more potent and effective for muscle growth, The Actions of IGF 1 in the Growth Plate and Its Role in Postnatal Bone Elongation Current Osteoporosis Reports Springer Nature Link IGF 1: The Secret to Supercharging Your Energy, Sleep, and Lean Muscle Mass Lifeforce mylifeforce.com