rat studies.

What can rat wound studies tell us—and not tell us—about GHK-Cu and connective tissue?

Rat wound studies show that GHK-Cu (glycyl-L-histidyl-L-lysine-copper) can stimulate connective tissue accumulation, including collagen and glycosaminoglycans, in vivo. However, these findings are limited to animal models and cannot be directly translated to human outcomes or clinical recommendations. The mechanisms and potential applications in humans remain uncertain and require further research.