Ebrahimi Mehdi, Khashayar Patricia, Keshtkar Abbasali, Etemad Koroush, Dini Mahboubeh, Mohammadi Zahra, Ebrahimi Hossein, Chaman Reza, Larijani Bagher
J Pediatr Endocrinol Metab. 2014 Jul;27(7-8):595-602. doi: 10.1515/jpem-2013-0428.
Despite the high prevalence of vitamin D deficiency in adults worldwide, not many studies have evaluated the condition in adolescents. The present study was therefore conducted to assess the prevalence of vitamin D deficiency in a group of students from Shahroud, Iran.
The cross-sectional descriptive analytical study was conducted on junior high and high school students of both genders from urban and rural areas of Shahroud, the largest city of Semnan Province in Iran, in winter 2011. The combination of stratified and cluster random sampling methods was applied in the study. A questionnaire on the demographic data, socioeconomic status, lifestyle habits (sun exposure, physical activity, dairy consumption), and drug and personal history was completed for each student. Blood samples were taken to assess vitamin D levels.
One thousand forty-seven students from four junior high and six high schools were recruited. From among them, 42.2% were boys and 57.8% were girls. Mean and standard deviation of vitamin D levels in the studied population were 14.7 ± 9.4 ng/mL. Only 7.2% of the boys and 3.8% of the girls had sensible sun exposure. The median of milk consumption was 3 glasses per week, ranging from 0 to 7.
It could be concluded that vitamin D deficiency is quite prevalent among the Iranian adolescents, and this is mainly because this group follows an unhealthy lifestyle due to osteoporosis.
尽管全球成年人维生素D缺乏症的患病率很高，但评估青少年这种情况的研究并不多。因此，本研究旨在评估伊朗沙赫鲁德一组学生中维生素D缺乏症的患病率。
2011年冬季，对伊朗塞姆南省最大城市沙赫鲁德城乡地区的初中和高中男女学生进行了横断面描述性分析研究。研究采用分层抽样和整群随机抽样相结合的方法。为每名学生填写了一份关于人口统计学数据、社会经济状况、生活方式习惯（日照、体育活动、乳制品消费）以及药物和个人史的问卷。采集血样以评估维生素D水平。
招募了来自四所初中和六所高中的1047名学生。其中，男生占42.2%，女生占57.8%。研究人群中维生素D水平的均值和标准差分别为14.7±9.4纳克/毫升。只有7.2%的男生和3.8%的女生有适度的日照。牛奶消费中位数为每周3杯，范围从0至7杯。
可以得出结论，维生素D缺乏症在伊朗青少年中相当普遍，这主要是因为该群体因骨质疏松而遵循不健康的生活方式。
