Anemia can cause hair loss. Anemia is a condition in which the red blood cells in the blood are lower than normal and the patient experiences a series of syndromes. At the same time, anemia can cause changes in many aspects of the human body, because in anemia the body's blood is redistributed, with priority given to ensuring the blood supply to vital organs such as the heart, liver, brain, kidneys, etc., while the supply to organs such as the skin, hair follicles, limbs, muscles, etc. is relatively reduced. The blood supply to the hair follicles of anemic patients will be reduced, which will result in malnutrition of the hair follicles and the inability to supply normal hair growth, then it will easily cause hair loss. At the same time, in some patients with iron deficiency anemia, due to tissue iron deficiency, there will also be dry hair, dry yellow, easy to break, hair loss and so on. So anemia can cause hair loss.