Wang Jui-Line, Shaw Ning-Sing
Department of Food and Nutrition, Hung-Kuang University, Taichung, Taiwan.
Asia Pac J Clin Nutr. 2005;14(3):278-84.
Iron status, prevalence of iron deficiency and elevated iron stores, and the effect of gastrointestinal ulceration on iron status in free-living Taiwanese elderly persons were all assessed in a nationally representative, cross-sectional nutrition survey--the Elderly NAHSIT. The survey included blood measurements of iron indices. Data were collected from 1202 elderly men and 1152 elderly women aged 65 years and older. Multiple iron measures, including serum ferritin (SF), transferrin saturation (Tsat), and hemoglobin were used to evaluate the prevalence of iron deficient erythropoiesis (ID) and iron deficiency anemia (IDA). Despite no routine practice of iron fortification in Taiwan, elderly subjects had a low prevalence of ID and IDA. The prevalence of ID was 2.3% in men and 1.4% in women. The prevalence of IDA was 2.5% in men and 2.0% in women. In contrast, 15.7% of men and 9.8% of women had elevated iron stores as diagnosed by SF>300 microg/L. Subjects with a history of gastrointestinal ulceration had significantly lower serum ferritin than those without ulcers, but the prevalence of anemia, ID and IDA was unaffected. In conclusion, elderly people in Taiwan are an iron-replete population with a high prevalence of elevated iron stores and a low prevalence of iron deficiency.
在一项具有全国代表性的横断面营养调查——老年人营养与健康状况调查（Elderly NAHSIT）中，评估了台湾自由生活的老年人的铁状态、缺铁和铁储存升高的患病率，以及胃肠道溃疡对铁状态的影响。该调查包括对铁指标的血液检测。数据收集自1202名65岁及以上的老年男性和1152名老年女性。使用包括血清铁蛋白（SF）、转铁蛋白饱和度（Tsat）和血红蛋白在内的多种铁指标来评估缺铁性红细胞生成（ID）和缺铁性贫血（IDA）的患病率。尽管台湾没有常规的铁强化做法，但老年受试者中ID和IDA的患病率较低。ID的患病率男性为2.3%，女性为1.4%。IDA的患病率男性为2.5%，女性为2.0%。相比之下，根据SF>300μg/L诊断，15.7%的男性和9.8%的女性铁储存升高。有胃肠道溃疡病史的受试者血清铁蛋白显著低于无溃疡者，但贫血患病率、ID和IDA不受影响。总之，台湾老年人铁储备充足，铁储存升高的患病率高，缺铁患病率低。
