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A: Rather than broadly inhibiting all MMPs, GHK-Cu research has documented selective effects: inhibitory activity toward MMP-1 (which degrades structural collagen) while stimulating MMP-9 (which facilitates cell migration and matrix clearing)
Some individuals may experience mild digestive changes, such as bloating or nausea, when beginning a new supplement
No published data favors one over the other
This process is called adaptive thermogenesis, and it is one of the biggest obstacles to sustained weight loss on any medication
Furthermore, glutathione has been shown to have skin-brightening effects
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