What should I know about haarausfall durch eisenmangel?

Iron deficiency is a well-established cause of diffuse hair loss (telogen effluvium). Iron is essential for hair follicle cell division; deficiency disrupts the hair cycle. Diagnosis requires blood tests (ferritin, serum iron, transferrin saturation, hemoglobin) – not DNA tests. Consumer genetic tests typically lack validated markers for iron deficiency. Variants in the HFE gene (hemochromatosis) relate to iron overload, not deficiency. The evidence linking iron deficiency to hair loss is clinically strong (numerous studies, guidelines), but genetic prediction is weak. Caution: self-supplementing iron without diagnosis can be harmful (overdose, liver damage). If iron deficiency is suspected, a doctor should perform blood tests and identify the underlying cause. Consumer tests cannot replace this step.