What role does Ferritin play in skin aging?

Ferritin is the primary iron storage protein. A direct role in skin aging is not established in the provided knowledge base. Mechanistically, iron can promote oxidative stress via Fenton chemistry, potentially damaging collagen and elastin – key drivers of skin aging. Conversely, iron is required for collagen synthesis. Thus, both iron overload (e.g., hemochromatosis) and deficiency could theoretically affect skin health. However, the context only covers low ferritin in female athletes and general iron homeostasis, not skin aging. Evidence is therefore mechanistic/unclear. No human studies linking ferritin levels to skin aging outcomes were provided. Consumer ferritin tests reflect iron stores, not skin-specific aging. For skin aging, proven interventions (sun protection, antioxidants, retinoids) are far more evidence-based. Ferritin measurement is useful for iron status assessment, but its role in skin aging remains speculative without dedicated research.