IGF 1 LR3 Injection Benefits And How It Works The HCG Institute Whitepaper Long R3 ver 6.indd Extracellular Interactors of the IGF System: Impact on Cancer Hallmarks and Therapeutic Approaches Some peptides can be risky if someone has active or recent cancer. Peptides that raise growth hormone or IGF 1, like IGF 1 LR3, IGF 1 DES, Tesamorelin, Sermorelin, CJC 1295, and Ipamorelin, increase IGF 1 LR3 in Aesthetic and Anti Aging Medicine: Benefits and Risks Hubmed Insulin like growth factor 1 (IGF1), IGF binding protein 3 (IGFBP3), and breast cancer risk: pooled individual data analysis of 17 prospective studies ScienceDirect