What are the risks of moderate iron deficiency anemia?

Moderate iron deficiency anemia can lead to dizziness, headache, fatigue, tinnitus, palpitations and other abnormal manifestations, which can increase the probability of abnormal symptoms such as memory loss and slow reaction. If the patient is also accompanied by cardiopulmonary insufficiency, there will be insufficient blood supply to the brain and heart, resulting in cerebral ischemia and heart failure.