Selenium deficiency risks in sub-Saharan African food systems and their geospatial linkages
Selenium deficiency risks in sub-Saharan African food systems and their geospatial linkages
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DOI：
10.1017/s0029665120006904
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发表时间：
2020-11-01
影响因子：
7
通讯作者：
Broadley, M. R.
中科院分区：
文献类型：
--
作者：
Ligowe, I. S.;Phiri, F. P.;Broadley, M. R.
硒（Se）是人体必需的健康元素。然而，我们对硒缺乏症患病率的了解低于其他公共卫生关注的微量营养素，如碘，铁和锌，特别是在撒哈拉以南非洲（SSA）。对撒南非洲，特别是马拉维的粮食系统的研究表明，人类缺硒的风险是普遍的，并受到地理的强烈影响。硒缺乏风险的直接证据包括血浆和尿液中硒浓度的全国代表性数据，作为硒状态的人群生物标志物。硒缺乏风险的长期地理空间变化与土壤特性及其对粮食作物硒浓度的影响有关。硒缺乏风险还与社会经济地位有关，包括动物源食品的获取。这篇综述强调了需要地理空间分辨的硒和其他微量营养素在食品系统中的运动数据，跨越农业营养健康学科领域（定义为GeoNutrition方法）。考虑到类似的硒和其他微量营养素缺乏风险的驱动因素可能发生在撒哈拉以南非洲的其他国家和其他地方，应相应地设计微量营养素监测方案。
Selenium (Se) is an essential element for human health. However, our knowledge of the prevalence of Se deficiency is less than for other micronutrients of public health concern such as iodine, iron and zinc, especially in sub-Saharan Africa (SSA). Studies of food systems in SSA, in particular in Malawi, have revealed that human Se deficiency risks are widespread and influenced strongly by geography. Direct evidence of Se deficiency risks includes nationally representative data of Se concentrations in blood plasma and urine as population biomarkers of Se status. Long-range geospatial variation in Se deficiency risks has been linked to soil characteristics and their effects on the Se concentration of food crops. Selenium deficiency risks are also linked to socio-economic status including access to animal source foods. This review highlights the need for geospatially-resolved data on the movement of Se and other micronutrients in food systems which span agriculture-nutrition-health disciplinary domains (defined as a GeoNutrition approach). Given that similar drivers of deficiency risks for Se, and other micronutrients, are likely to occur in other countries in SSA and elsewhere, micronutrient surveillance programmes should be designed accordingly.