Pawlak Roman, Bell Kami
Department of Nutrition Science, East Carolina University, Greenville, NC, USA.
Ann Nutr Metab. 2017;70(2):88-99. doi: 10.1159/000466706. Epub 2017 Mar 21.
Iron is considered a nutrient of concern for vegetarians. In children, inadequate iron status may lead to anemia and poor growth.
Thirteen original manuscripts met the inclusion criteria. Various biochemical markers of iron status, such as hemoglobin (Hb) and serum ferritin, were used. Seven of the 13 studies reported the prevalence of iron deficiency separately for vegetarians and non-vegetarians. Five out of 7 showed a higher prevalence of iron deficiency among the vegetarian participants, while the other 2 showed a higher prevalence of iron deficiency among non-vegetarians. A wide range of iron deficiency prevalence, from 4.3% of vegetarian participants in one study to 73% having ferritin <10 µg/L in another study, was found. Hb data showed almost as wide variations from 0% of children having Hb values lower than 11 g/dL to 47.5% having Hb values below 3rd percentile. Key Messages: The prevalence of iron deficiency among vegetarian children varies considerably from one study to another. The wide variation in the prevalence of inadequate iron status was consistent for studies from industrial and developing countries. The physiological significance of low iron status among vegetarians reported in some studies is unknown.
铁被认为是素食者需要关注的一种营养素。在儿童中，铁状态不足可能导致贫血和生长发育不良。
13篇原始手稿符合纳入标准。使用了各种铁状态的生化标志物，如血红蛋白（Hb）和血清铁蛋白。13项研究中的7项分别报告了素食者和非素食者缺铁的患病率。7项研究中的5项显示素食参与者中铁缺乏的患病率较高，而另外2项显示非素食者中铁缺乏的患病率较高。发现缺铁患病率范围很广，从一项研究中4.3%的素食参与者到另一项研究中73%的铁蛋白<10μg/L。Hb数据显示差异也几乎同样大，从0%的儿童Hb值低于11g/dL到47.5%的儿童Hb值低于第3百分位数。关键信息：素食儿童中铁缺乏的患病率在不同研究之间差异很大。工业国家和发展中国家的研究中铁状态不足患病率的广泛差异是一致的。一些研究中报告的素食者中铁状态低的生理意义尚不清楚。
