营养性贫血是指红细胞生成时缺乏造血因子,致其生成的数量减少,形态异常。多数造血因子常影响红细胞系、粒细胞系、巨核细胞系造血,亦可影响全身其它系统细胞的功能,故营养性贫血是一个全身性疾病,特别是在儿童时期危害更大。该类贫血可以通过预防降低其发病率。一、分类:参与造血的物质很复杂,人们比较熟知的如叶酸、维生素B_6、B_(12)、铁、锌、铜和蛋白质。多数造血因子均以辅酶的形式参与DNA或RNA的合成,或参与血红蛋白的生物合成。按照造血因子缺乏时的细胞形态改变 Nutritional anemia refers to the lack of hematopoietic factors when erythropoiesis, resulting in reduced the number of its formation, abnormal morphology. Most hematopoietic factors often affect the erythrocyte lineage, granulocyte lineage and megakaryocyte lineage, which can also affect the function of other systemic cells throughout the body. Nutritional anemia is a systemic disease, especially in childhood. This type of anemia can reduce the incidence by preventing it. First, the classification: The material involved in hematopoiesis is very complex, people are more familiar with such as folic acid, vitamin B_6, B_ (12), iron, zinc, copper and protein. Most hematopoietic factors are involved in the synthesis of DNA or RNA as coenzymes, or involved in hemoglobin biosynthesis. According to the lack of hematopoietic cells morphological changes