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GHK occurs naturally in human plasma at concentrations that decline with age (published studies report ~200 ng/mL in adults around age 20, dropping to ~80 ng/mL by age 60), which has driven sustained research interest in the GHK-Cu peptide as a model compound for age-related cellular biology
Additionally, taking the steps to reduce your oxidative stress and inflammatory levels through healthy lifestyle choices such as exercise and sufficient sleep may also support your overall glutathione levels
Consistency matters more than timing
Anti-aging activity of the GHK peptidethe skin and beyond
If your goal involves gastrointestinal healing, the peptide contacting intestinal tissues directly could provide benefit even if it never reaches the bloodstream
