Department of Community Medicine and Global Health, Institute of Health and Society, University of Oslo, Post Box 1130 Blindern, 0318 Oslo, Norway.
Norwegian Institute of Public Health, 0318 Oslo, Norway.
Nutrients. 2018 Mar 5;10(3):305. doi: 10.3390/nu10030305.
We lack knowledge about iodine status in the Norwegian population in general, and particularly among immigrants. We aimed to estimate the iodine status and potentially associated factors in a Somali population in Norway. Somali men and women aged 20-73, who were living in one district in Oslo, were recruited between December 2015 and October 2016. Twenty-four-hour urine was collected from 169 participants (91 females and 78 males). Iodine was analysed using the Sandell-Kolthoff reaction on microplates and colorimetric measurement. Information about diet was collected using a short food frequency questionnaire. Iodine intake was calculated from the 24-h iodine excretion. The mean urine volume over 24-h was 1.93 liters (min-max: 0.55-4.0) and the urinary iodine concentration (UIC) varied from 13 to 263 µg/L with a median value of 62.5 µg/L indicating a population with mild iodine deficiency. The median daily iodine intake for the study population was estimated to be 124 μg/day. Mean serum thyroid-stimulating hormone, thyroxine (T4) and triiodothyronine (T3) was 2.1 (SD 1.1) mU/L, 15.0 (SD 2.1) pmol/L, and 5.1 (SD 0.6) pmol/L, respectively. No food groups were associated with iodine intake and neither was gender, age, education level nor length of residence in Norway. In conclusion, this study showed that iodine intake was low, and a considerable proportion of the Somali population studied had sub-optimal iodine status. Monitoring of iodine status should be prioritised and measures to ensure adequate iodine intake, particularly among vulnerable groups initiated.
我们对挪威普通人群，尤其是移民人群的碘状况知之甚少。我们旨在评估挪威索马里人群的碘状况和潜在相关因素。2015 年 12 月至 2016 年 10 月，我们在奥斯陆的一个区招募了 20-73 岁的索马里男女。从 169 名参与者（91 名女性和 78 名男性）中收集了 24 小时尿液。使用微量板上的 Sandell-Kolthoff 反应和比色法分析碘。使用简短的食物频率问卷收集有关饮食的信息。根据 24 小时碘排泄量计算碘摄入量。24 小时尿液量的平均值为 1.93 升（最小-最大：0.55-4.0），尿碘浓度（UIC）从 13 到 263μg/L 不等，中位数为 62.5μg/L，表明人群存在轻度碘缺乏。研究人群的碘日摄入量中位数估计为 124μg/天。平均血清促甲状腺激素、甲状腺素（T4）和三碘甲状腺原氨酸（T3）分别为 2.1（SD 1.1）mU/L、15.0（SD 2.1）pmol/L 和 5.1（SD 0.6）pmol/L。没有食物组与碘摄入量相关，性别、年龄、教育水平和在挪威的居住时间也没有相关。总之，这项研究表明，碘摄入量较低，研究中的相当一部分索马里人群碘状况不理想。应优先监测碘状况，并采取措施确保摄入足够的碘，特别是在弱势群体中。
