The potential of GHK as an anti-aging peptide.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing preclinical mechanisms and observational data without new human experimental data.
PubMed 35083444 · doi:10.31491/apt.2020.03.014
What was done
This is a narrative review examining published literature on the endogenous tripeptide GHK (glycyl-L-histidyl-L-lysine) and its copper chelate GHK-Cu, summarizing observational data on age-related serum changes alongside in vitro and in vivo animal findings on tissue remodeling and cognition.
What was found
Human serum GHK concentrations average 200 ng/ml at age 20 but decline to an average of 80 ng/ml by age 60. GHK and GHK-Cu demonstrate antioxidant, anti-inflammatory, wound healing, and skin remodeling properties in vitro and in vivo, and preliminary mouse studies show partial reversal of age-related cognitive impairment via anti-inflammatory and epigenetic pathways. No additional quantitative data or statistical measures are reported in the abstract.
Why it matters
It consolidates mechanistic and preclinical rationale for evaluating endogenous GHK restoration as a candidate intervention in regenerative and anti-aging medicine.
Limits
The abstract describes a broad narrative overview rather than a systematic review or controlled clinical trial. Reported cognitive benefits are restricted to preliminary mouse models, and human data are limited to observational serum averages without sample sizes, control details, or variance measures.
Cited by
- supports Endogenous levels and concentration of the copper tripeptide GHK-Cu decline as humans age.