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Description
Disrupted copper homeostasis contributes to numerous neurodegenerative conditions, including Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis (ALS), making GHK-Cu's copper-regulating properties particularly relevant to neurological research

doi: 10.1021/bi101582p

Testing is the best way to confirm a deficiency before supplementing

doi: 10.1093/ajcn/83.6.1526S

Look for cloudiness, stringiness, surface film, particles, or a change in how the liquid moves along the glass
