Anemia does not cause patients to sleep poorly. The main clinical manifestation of anemia is that it leads to dizziness, lightheadedness, peripheral weakness, and lethargy. There are many causes of anemia. Many female patients may have anemia due to excessive menstruation. There are also some patients who are prone to iron deficiency anemia because of poor nutrition, such as a relatively small diet and picky eating problems, resulting in insufficient iron red iron content in the body. There are many reasons for insomnia, caused by the patient’s own poor lifestyle, such as frequent late nights, frequent night shifts, resulting in disruption of the biological clock, causing patients to have symptoms of poor sleep, insomnia and excessive dreaming.