The dark under circles could be caused by the lack of good sleep. It could also be caused by the tiredness or the bad blood pressure. Iron is the component of hemoglobin which is in the oxygen transportation and storage. As the iron storage, it can not meet the needs of normal red blood cell formation. Then it will cause anemia which is called iron deficiency anemia. If you lack iron for about 3-5 months, you will get this disease. However, the dark under circles could be caused by the iron deficiency. If you lack the iron in your body, you will have many symptoms for your body. If the children lack iron, they may love crying, bad sleep, wake up often, listlessness, anorexia piddle growth, retardation, often dizziness, insomnia, the cold and so on. However, if the women lack the iron in the body, they will get pale at the face. Their immune system will be weak, often getting cold. They may be prone to oral ulcer. Thus, you'd better not let yourself get the iron deficiency.
