wieviel eisen bei haarausfall — what are common causes?

The question about iron and hair loss is valid, but the provided context does not contain specific data on iron deficiency and hair loss. Generally accepted medical knowledge: iron deficiency can cause diffuse hair loss (telogen effluvium) by disrupting the hair cycle, especially in women with heavy menstrual bleeding or vegetarian/vegan diets. However, iron deficiency is only one of many possible causes. Common causes of hair loss include: androgenetic alopecia (genetic), stress, thyroid disorders, hormonal changes (e.g., postpartum), nutrient deficiencies (zinc, biotin, vitamin D), autoimmune conditions (alopecia areata), or medications. A blood test (ferritin, transferrin saturation) can provide clarity, but a DNA test alone is not suitable for diagnosing iron deficiency or hair loss. Evidence for iron supplementation without confirmed deficiency is weak. Consult a doctor or dermatologist for persistent hair loss.