Iron deficiency anemia may be caused by insufficient iron intake due to increased iron demand, impaired iron absorption and excessive iron loss.
1. Increased iron demand and insufficient iron intake: infants and young children need more iron, if they do not supplement eggs, meat and other complementary foods with high iron content, it is easy to cause iron deficiency, which may lead to iron deficiency anemia.
2. Iron absorption disorder: it may be due to iron absorption disorder caused by gastrointestinal absorption abnormality after gastric resection, chronic enteritis, no transferrin anemia, etc. Iron deficiency anemia may occur.
3. Excessive iron loss: the most common causes are excessive menstruation and repeated bleeding of hemorrhoids. It may also be caused by hemoptysis, alveolar hemorrhage, hemoglobinuria, hemodialysis, etc. Iron deficiency anemia can be caused when iron loss is chronic and not corrected for a long time.
It is recommended that patients with iron deficiency anemia go to the hospital in time and follow the doctor’s instructions for treatment to avoid delay.