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Studies confirm 50% drops by midlife, linking to aging symptoms.[1][9] Restoring NAD+ has been shown in animal studies to improve lifespan and healthspan, with human trials indicating benefits in muscle function and cognitive performance
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The chemistry that makes both AHK and GHK interesting is copper coordination
It is a methylquinolinium small molecule with no amino-acid sequence and no peptide bonds
If you started with very low levels, the early days may feel more noticeable than they would for someone simply maintaining
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