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贫血是指血液中红细胞及血色素含量减少,老年人血中红细胞少于350万/分升,血色素低于11克/分升时,就可认为存在贫血。引起贫血的原因大致有以下几种:一是缺铁性贫血,这是因为制造血液的原料——铁缺乏,导致血细胞生成降低。二是造血器官的功能发生了故障,不能产生足够的血细胞。三是机体持续少量的失血,如胃肠道肿瘤、痔、溃疡病等,久之则引起贫
Anemia refers to the reduction of red blood cells and hemoglobin in the blood, less than 3.5 million red blood cells per deciliter for the elderly, and less than 11 grams per deciliter for the hemoglobin. Anemia caused by the following generalized the following: First, iron deficiency anemia, which is the raw material for the manufacture of blood - iron deficiency, leading to decreased blood cell production. Second, the function of hematopoietic organs has failed, can not produce enough blood cells. Third, the body sustained a small amount of blood loss, such as gastrointestinal cancer, hemorrhoids, ulcer disease, etc., a long time caused by poor