Myths vs facts: Transferrin and skin aging

Transferrin is an iron-transport protein, not a direct marker of skin aging. A common myth is that high transferrin levels protect the skin, but in reality transferrin mainly reflects iron status. Excess iron can accelerate skin aging via oxidative stress, while iron deficiency may impair collagen synthesis. However, the evidence for a direct link between serum transferrin and skin aging is weak and mostly indirect. Clinically more relevant markers are ferritin, hemoglobin, and total iron-binding capacity. Transferrin measurements alone are insufficient for anti-aging recommendations. A balanced iron intake combined with antioxidants (e.g., vitamins C and E) and sun protection is currently more effective than isolated transferrin optimization. Caveat: Most studies are observational, not causal.