铁是构成血红蛋白的主要成分之一.老年人造血及供血机能减退,膳食中供铁不足或因胃肠道疾病使摄入的铁从肠道排出体外,都可影响血红蛋白的合成,进而导致老年人发生缺铁性贫血.氧与血红蛋白有特殊的亲合力,氧进入人体后与血红蛋白结合,形成氧 Iron is one of the major components of hemoglobin.Hematopoietic and blood dysfunction in the elderly, iron deficiency in the diet or intake of iron due to gastrointestinal diseases excreted from the intestine, can affect hemoglobin synthesis, which led to the elderly Human iron deficiency anemia. Oxygen and hemoglobin have a special affinity, oxygen into the human body with hemoglobin, the formation of oxygen