What are the causes of anemia

Anemia may be caused by hematopoietic stem cell abnormalities such as anemia and leukemia. It may also be caused by bone marrow necrosis, bone marrow fibrosis, abnormal levels of hematopoietic regulatory factors, etc., but it is also suspected to be caused by malnutrition and chronic bleeding diseases in the body. You need to go to the hospital for blood routine and bone marrow examination as soon as possible.