ArticleOsteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA2011
Effect of different dress style on vitamin D level in healthy young Orthodox and ultra-Orthodox students in Israel.
Article in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.
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13 citing papers in PubMed, 1 synthesis or guideline pooled it, 31 citations in OpenAlex.
- Prediction models and questionnaires developed to predict vitamin D status in adults: a systematic review.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2020Pooled it
- Health Disparities Among Ultra-Orthodox and Non-Ultra-Orthodox Residents in Neighboring Cities in Israel: A Cross-Sectional Study.Journal of religion and health · 2025Article
- Social determinants of serum 25-hydroxyvitamin D concentrations deficiency in older Chilean people.Scientific reports · 2023Article
- Threading the Needle: Online Modest Apparel Forums and Physical Activity for Women with Religious-Based Modesty Preferences.Journal of religion and health · 2023Article
- Vitamin D deficiency increases with age and adiposity in Emirati children and adolescents irrespective of type 1 diabetes mellitus: a case control study.BMC endocrine disorders · 2023Article
- Risk of major osteoporotic fractures among ultra-orthodox Jews.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2023Article
- Vitamin D deficiency/insufficiency from childhood to adulthood: Insights from a sunny country.World journal of clinical pediatrics · 2017Review
- Vitamin D deficiency among physicians: a comparison between hospitalists and community-based physicians.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2015Article
- Sun Exposure and Protection Habits in Pediatric Patients with a History of Malignancy.PloS one · 2015Article
- Vitamin D Status among Older Adults Residing in the Littoral and Andes Mountains in Ecuador.TheScientificWorldJournal · 2015Article
- Dynamic changes in serum 25-hydroxyvitamin D during pregnancy and lack of effect on thyroid parameters.PloS one · 2014Article
- Hypovitaminosis D in the Middle East and North Africa: Prevalence, risk factors and impact on outcomes.Dermato-endocrinology · 2013Article
- Vitamin D deficiency among healthy adolescents in Al Ain, United Arab Emirates.BMC public health · 2013Article
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Authors and funding
3 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
unlabelledUltra-orthodox Jewish lifestyle, which encourages modest dress and indoor scholarly activity, represents a risk factor for vitamin-D deficiency. Our study in healthy young males from higher education religious institutions located in the same geographical area showed frequent and severe vitamin D deficiency, strongly correlated with the degree of sun exposure. However, PTH level was usually normal.
introductionUltra-orthodox Jewish lifestyle encourages modest dress and indoor scholarly activity. As such, it represents a risk factor for vitamin-D deficiency, a worldwide problem previously underestimated in sunny countries. Our aim was to characterize the vitamin-D status of religious Jewish males according to sun exposure and outdoor activity, and study the correlation between serum 25-hydroxyvitamin D (25(OH) D) and PTH level.
methodsSeventy-four young adult males were recruited from three Jewish higher education institutions (Yeshiva) in Jerusalem. Yeshiva-A ultra-Orthodox students (aged 20.1 ± 0.6) wear traditional clothing, live in dormitories and stay mostly indoor. Yeshiva-B ultra-Orthodox students (aged 33.0 ± 4.2) dress similarly but have regular outdoor activities. Yeshiva-C religious students (aged 19 ± 2.0) participate in a mixed army/Yeshiva program. Weekly outdoor activity time and degree of sun exposure were estimated by questionnaire.
results25(OH)D was 8.9 ± 3.6, 10.2 ± 5.7 and 21.7 ± 10.4 ng/ml (mean ± SD) in Yeshiva A, B and C. 25(OH)D was correlated with degree of sun exposure (r = 0.54, p < 0.0001) and inversely correlated with PTH (r = -0.3, p = 0.01). Levels below 20 ng/ml were considered as vitamin D deficiency. PTH was normal in 87% of vitamin D-deficient subjects from Yeshiva-A and Yeshiva-C (mean age 20), compared to 52% of Yeshiva-B students (mean age 33). Bone mineral density studied in a random subset (n = 14) of vitamin D-deficient subjects showed Z-scores of -1.5 ± 1.0, -1.8 ± 0.8, -2.1 ± 0.4 in femoral neck, spine and radius.
conclusionsSevere vitamin-D deficiency is extremely prevalent in ultra-Orthodox males. Despite rare secondary hyperparathyroidism, they represent an important previously unrecognized high-risk group for metabolic bone disease.
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