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Endocrinology 153 , 647658 (2012)
Reporting summary Further information on research design is available in the Nature Portfolio Reporting Summary linked to this article
Supports Cognitive Function and Mental Clarity B vitamins assist neurotransmitter production, which is important for focus, memory, and mood regulation
Concentrations of GHK-Cu in the body decline significantly with age, from approximately 200 ng/mL in young adults to under 80 ng/mL by age 60, making topical replenishment meaningful
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