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Regardless, the dose-response relationship is consistent: higher doses produce more weight loss, with diminishing incremental returns at the top end
GHK-Cu had a higher collagen responder rate (70% vs 40%) in the only direct comparison, and showed 55.8% wrinkle volume reduction at eight weeks in a split-face trial
thus, it is very effective for people suffering from insulin resistance or prediabetes
This can be counteracted with adequate protein intake and resistance exercises like weight lifting or body-weight training
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