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The discovery that GHK-Cu binds directly to SIRT1 (Li et al., 2025) has generated particular interest, as SIRT1 is a central regulator of cellular longevity and stress resistance

The research primarily investigated the potential action of the peptide on dermal procollagen synthesis, keratinocyte proliferation, differentiation, and cutaneous inflammation

It is synthesized primarily in the cytosol of mammalian cells, with the highest concentrations found in the liver

Foods like asparagus, avocado, spinach, and broccoli contain compounds that help your body maintain healthy glutathione levels naturally

It's a surprisingly common point of confusion