Is Ferritin Eisenmangel useful for Allergie?

Ferritin is a protein that stores iron and is commonly used to diagnose iron deficiency. Iron deficiency can affect immune function, as iron is essential for immune cell activity. Some observational studies suggest a possible link between low ferritin (iron deficiency) and increased allergy risk or severity, possibly through altered histamine release or immune dysregulation. However, the evidence is weak and inconsistent. Other studies find no clear association or even a protective effect of iron deficiency against certain allergies. Therefore, ferritin testing alone is not useful for allergy diagnosis or management. It remains a valid marker for iron deficiency, but allergies require specific testing (e.g., IgE, skin prick tests) and clinical evaluation. The evidence for ferritin's utility in allergies is 'unclear' – mechanistic plausibility exists but lacks robust human data. Safety note: both low and high ferritin levels can have health implications; iron supplementation should only be taken under medical supervision.