GHK-Cu is unique in that it is a copper peptide complex rather than a purely synthetic compound, giving it a distinct mechanism of action rooted in endogenous biology
It also explains why the transition is a clinical decision rather than an administrative one, since glycemic control, other diabetes medications, and any insulin or insulin secretagogue in the regimen all interact with the change
Their gastric acid-stimulating effects compound with those of catechols, caffeine, and other irritants present simultaneously in brewed coffee, producing a cumulative gastrointestinal impact greater than any single compound alone For a complete breakdown of the five factors that determine whether coffee is genuinely low acid roast level, altitude, processing method, brewing method, and freshness see our peer-reviewed low acid coffee science guide
Body composition was also evaluated in a smaller group who underwent specialised scans to look at their fat mass and their lean mass