Understanding the copper-iron relationship transforms clinical approach to anaemia management. First, copper oxidises iron from its ferrous (Fe2+) to ferric (Fe3+) form—the only configuration capable of binding transferrin for systemic circulation. Without this enzymatic step, iron accumulates in tissues while cells remain oxygen-deprived, a paradox that confounds standard treatment protocols.
Second, conventional iron and ferritin laboratory results provide incomplete diagnostic information. A patient with normal serum iron and elevated ferritin may still experience functional iron deficiency if copper status is depleted. This distinction between absolute and functional iron deficiency is critical for directing appropriate intervention.
Third, dietary and supplemental factors interact significantly: high zinc supplementation blocks copper absorption, organ meat consumption has declined in modern diets, and refined foods lack meaningful copper content. Assessment should therefore include both copper biomarkers and detailed dietary-supplemental history before escalating iron replacement doses.
Read the full article on GMJ Newsroom.
Was this article helpful?
