Late life targeting of the IGF 1 receptor improves healthspan and lifespan in female mice Nature Communications IGF 1 LR3 in Aesthetic and Anti Aging Medicine: Benefits and Risks Hubmed IGF 1 LR3: Dosage Results and Safety Guide Vita Bella Health IGF 1 LR3 (Insulin like Growth Factor 1 Long R3) is often called the "Holy Grail" of muscle building peptides because of its potent anabolic effects. In a Med Spa context, it is typically sought out