Iron deficiency is present when body iron stores are depleted. While lack of iron is the main cause of this deficiency, lack of folate, ascorbic acid, riboflavin and various minerals also contribute to anemia.

• 铁缺乏症系人体内铁储存量大幅度降低所致，缺铁为这种疾病的主要原因，叶酸盐、抗坏血酸、核黄素及各种矿物质缺乏也是造成贫血的原因。