Clevenger is not known to have tested positive for either of the banned drugs he is alleged to have used: a hard-to-detect and widely available peptide called BP-157 that some believe is key to injury recovery
These compounds are known to have significant adverse effects on human health as exposure, particularly developmental exposure, has been associated with cognitive deficits, neurological disorders, reproductive abnormalities, metabolic diseases/disorders, obesity, and diabetes 5
It is important to note that the majority of this mechanistic research has been conducted in cell culture and animal models, with a significant proportion originating from a single research group
Comparison at a glance GHK-Cu (copper tripeptide) What the research shows GHK-Cu is the most-cited peptide in the hair-growth context, largely because copper tripeptides act on the dermal papilla cells that regulate the follicle
the full search strategy is detailed in Supplementary Table S1