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Because GHK binds Cu(II) tightly, it offers a controlled system for studying how copper may relate to collagen pathways, antioxidant enzyme activity, and gene-expression regulation
When ingested, NAC is rapidly absorbed into the bloodstream and undergoes deacetylation in the liver
They can offer helpful data points, but they dont substitute for a thorough medical history, physical examination, and clinical judgment
But if you're early in this process, this foundation matters
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