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Effect of different dress style on vitamin D level in healthy young Orthodox and ultra-Orthodox students in Israel.
Osteoporos Int. 2011 Nov; 22(11):2895-8.OI

Abstract

Ultra-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.

INTRODUCTION

Ultra-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.

METHODS

Seventy-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.

RESULTS

25(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.

CONCLUSIONS

Severe 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.

Authors+Show Affiliations

Diabetes and Endocrinology, Clalit Health Services, Jerusalem, Israel. tsuranat@netvision.net.ilNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21110005

Citation

Tsur, A, et al. "Effect of Different Dress Style On Vitamin D Level in Healthy Young Orthodox and ultra-Orthodox Students in Israel." Osteoporosis International : a Journal Established as Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, vol. 22, no. 11, 2011, pp. 2895-8.
Tsur A, Metzger M, Dresner-Pollak R. Effect of different dress style on vitamin D level in healthy young Orthodox and ultra-Orthodox students in Israel. Osteoporos Int. 2011;22(11):2895-8.
Tsur, A., Metzger, M., & Dresner-Pollak, R. (2011). Effect of different dress style on vitamin D level in healthy young Orthodox and ultra-Orthodox students in Israel. Osteoporosis International : a Journal Established as Result of Cooperation Between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 22(11), 2895-8. https://doi.org/10.1007/s00198-010-1492-y
Tsur A, Metzger M, Dresner-Pollak R. Effect of Different Dress Style On Vitamin D Level in Healthy Young Orthodox and ultra-Orthodox Students in Israel. Osteoporos Int. 2011;22(11):2895-8. PubMed PMID: 21110005.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of different dress style on vitamin D level in healthy young Orthodox and ultra-Orthodox students in Israel. AU - Tsur,A, AU - Metzger,M, AU - Dresner-Pollak,R, Y1 - 2010/11/26/ PY - 2010/06/02/received PY - 2010/11/02/accepted PY - 2010/11/27/entrez PY - 2010/11/27/pubmed PY - 2012/3/1/medline SP - 2895 EP - 8 JF - Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA JO - Osteoporos Int VL - 22 IS - 11 N2 - UNLABELLED: Ultra-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. INTRODUCTION: Ultra-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. METHODS: Seventy-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. RESULTS: 25(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. CONCLUSIONS: Severe 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. SN - 1433-2965 UR - https://www.unboundmedicine.com/medline/citation/21110005/Effect_of_different_dress_style_on_vitamin_D_level_in_healthy_young_Orthodox_and_ultra_Orthodox_students_in_Israel_ L2 - https://dx.doi.org/10.1007/s00198-010-1492-y DB - PRIME DP - Unbound Medicine ER -