Limbert Edward, Prazeres Susana, São Pedro Márcia, Madureira Deolinda, Miranda Ana, Ribeiro Manuel, Carrilho Francisco, Jácome de Castro J, Lopes Maria Santana, Cardoso João, Carvalho Andre, Oliveira Maria João, Reguengo Henrique, Borges Fátima
Serviço de Endocrinologia, Instituto Português de Oncologia de Lisboa de Francisco Gentil, Portugal.
Acta Med Port. 2012 Jan-Feb;25(1):29-36. Epub 2012 May 25.
The aim of the present study was to evaluate iodine intake in portuguese school children in order to inform health authorities of eventual measures to be implemented.
Iodine is the key element for thyroid hormone synthesis and its deficiency even mild, as found in other European countries, may have deleterious effects in pregnancy resulting in cognitive problems of offsprings. In Portugal there are no recent data on iodine intake in schoolchildren.
3680 children aged 6-12 years of both sexes, from 78 different schools were studied. Iodine intake was evaluated trough urine iodine (UI) determinations using a colorimetic method.
The global median UI value was 105.5 µg/L; the percentage of children with UI <100 µg/L was 47.1%, corresponding to 41% of the studied schools. The percentage of values <50 µg/L was 11.8%. The male gender, the south region of the country and the distribution of milk in school were significantly linked with a higher iodine elimination.
Our global results point to a borderline/ mildly insufficient iodine intake in the portuguese school population. However 47% of the children had UI under 100 µg /L. The comparison of our results with the available data from 30 years ago, point to a considerable improvement, due to silent prophylaxis. Male gender, geographical area and milk distribution influenced positively iodine intake.The importance of milk has been referred in numerous papers.
The study of UI in the Portuguese school population points to a borderline iodine intake. However, in 47% of children iodine intake was inadequate. Compared with data from the eighties, a considerable increase in iodine elimination was found. Taking into account the potencial deleterious effects of inadequate iodine intake, a global prophylaxis with salt iodization has to be considered.
本研究旨在评估葡萄牙学龄儿童的碘摄入量，以便向卫生当局通报可能需要实施的措施。
碘是甲状腺激素合成的关键元素，正如在其他欧洲国家所发现的那样，即使是轻度碘缺乏，也可能对妊娠产生有害影响，导致后代出现认知问题。在葡萄牙，目前尚无关于学龄儿童碘摄入量的最新数据。
对来自78所不同学校的3680名6至12岁的男女儿童进行了研究。采用比色法通过测定尿碘（UI）来评估碘摄入量。
尿碘中位数的总体值为105.5微克/升；尿碘<100微克/升的儿童比例为47.1%，相当于41%的被研究学校。尿碘值<50微克/升的比例为11.8%。男性、该国南部地区以及学校牛奶的分发与较高的碘排泄显著相关。
我们的总体结果表明，葡萄牙学龄人群的碘摄入量处于临界/轻度不足状态。然而，47%的儿童尿碘低于100微克/升。将我们的结果与30年前的现有数据进行比较，由于隐性预防措施，碘摄入量有了显著改善。男性性别、地理区域和牛奶分发对碘摄入量有积极影响。许多论文都提到了牛奶的重要性。
对葡萄牙学龄人群尿碘的研究表明碘摄入量处于临界状态。然而，47%的儿童碘摄入量不足。与80年代的数据相比，碘排泄量有了显著增加。考虑到碘摄入不足可能产生的有害影响，必须考虑实施全民食盐加碘预防措施。
