Myths vs facts: Ferritin and Allergie

Ferritin is an iron storage protein and not a direct marker for allergies. A common myth is that high ferritin causes allergies or that low ferritin triggers them. In reality, ferritin is an acute-phase reactant: during inflammation – including allergic reactions – ferritin can rise transiently without indicating iron overload. Conversely, chronic inflammation can lead to functional iron deficiency with low ferritin, which is sometimes misinterpreted as an allergy cause. The scientific evidence for a causal link between ferritin and allergies is weak, mostly mechanistic or from observational studies with conflicting results. While iron status may influence immune function, ferritin alone is not a reliable allergy marker. If you have allergy symptoms, proper allergy testing (specific IgE, skin prick) is essential. Ferritin should be interpreted alongside other iron markers and inflammatory parameters (e.g., CRP). Do not self-supplement iron or attempt to lower ferritin without medical guidance.