BPC-157 and TB-500 share overlapping cell-migration and tissue-repair pathways, while GHK-Cu is the classic copper-binding tripeptide researched for collagen synthesis and fibroblast biology
Menzel J, Jabakhanji A, Biemann R, Mai K, Abraham K, Weikert C
Mortality from coronary heart disease in subjects with type 2 diabetes and in nondiabetic subjects with and without prior myocardial infarction
Nutrients 2021;13:2552.ArticlePubMedPMC 33
What Studies Have NOT Demonstrated in Humans Despite community claims, no controlled human trial has demonstrated: A specific body fat percentage reduction attributable to LR3 IGF-1 cycling A specific lean mass gain figure for the standard 10-day-on / 4-week-off pattern Cardiovascular safety endpoints across repeated cycles Long-term cancer-incidence data for cycled LR3 IGF-1 use Epidemiological data on chronically elevated endogenous IGF-1 has raised theoretical cancer concerns (Yoshida & Delafontaine, 2020), and that concern is one reason community protocols favor short, spaced cycles rather than continuous use
