What role does Ferritin Eisenmangel play in longevity?

The provided context does not contain specific information about ferritin or iron deficiency in relation to longevity. Ferritin is the main iron storage protein; deficiency (Eisenmangel) can lead to anemia, impaired oxygen transport, and oxidative stress. Chronically low iron may affect mitochondrial function and thus potentially accelerate aging, but direct evidence for a causal role in human longevity is weak and inconsistent. Some research suggests a U-shaped relationship: both very low and very high iron levels may be detrimental. Without robust longitudinal or interventional studies, the clinical relevance for longevity remains uncertain. Consumer tests measuring ferritin can indicate iron status but should not be overinterpreted for longevity claims. Evidence: unclear.