How are Ferritin and Stress related?

Ferritin is an iron storage protein and also an acute-phase reactant that rises during inflammation. Chronic stress can increase cortisol and pro-inflammatory cytokines like interleukin-6, which in turn stimulate hepcidin production in the liver. Hepcidin blocks iron release from stores and intestinal absorption, potentially raising ferritin even when iron stores are normal or low – a state called 'functional iron deficiency.' Observational studies suggest a link between psychological stress and elevated ferritin, but the evidence is moderate: effect sizes are small and confounded by diet, sleep, and underlying inflammation. Ferritin alone is not a reliable stress marker. When interpreting ferritin results, measuring C-reactive protein (CRP) helps distinguish inflammatory elevation from true iron overload. Consumer lab tests like MyBody-X can measure ferritin but cannot diagnose stress. Clinical follow-up is recommended for abnormal values.