Are you experiencing more hair loss than usual? Before pointing the finger at stress or genetics, it is essential to consider an often underestimated cause: iron deficiency, or too low a ferritin level. Lack of iron and hair health are closely linked: low ferritin disrupts the hair cycle and leads to diffuse, often unexplained hair loss. This deficiency is one of the most common nutritional causes of hair loss, directly impacting the life cycle of your hair. We explain the crucial link between iron deficiency and abnormal hair loss, and above all, how to reverse this process to restart your hair growth through targeted supplementation.