Vitamin D Status of Inuit Preschoolers Reflects Season and Vitamin D Intake

School of Dietetics and Human Nutrition, McGill University, Montreal H9X 3V9, Quebec, Canada.
Journal of Nutrition (Impact Factor: 3.88). 10/2010; 140(10):1839-45. DOI: 10.3945/jn.110.124644
Source: PubMed


Rickets ascribed to hypovitaminosis D remains a public health concern among Aboriginal children in Canada and the United States. Our primary objective in this study was to investigate the prevalence and risk factors (gender, age, vitamin D intake, and socioeconomic status) for low vitamin D status of Inuit preschoolers living in 16 Arctic communities (51(o)N-70(o)N) and participating in the 2007-2008 Nunavut Child Inuit Health Survey. Children were selected randomly in summer (n = 282) and a follow-up was performed in winter for a subsample (n = 52). Dietary intake was assessed through the administration of a 24-h dietary recall and a FFQ. Anthropometric measurements (height, weight) were assessed. Plasma 25-hydroxy vitamin D was measured using a chemiluminescent assay (Liaison, Diasorin). Prevalence of vitamin D insufficiency (<75 nmol/L) among preschoolers was 78.6% and 96.8% in summer and winter, respectively. Median vitamin D concentrations and interquartile ranges in summer and winter were 48.3 (32.8-71.3) and 37.7 (21.4-52.0) nmol/L, respectively. The prevalence of vitamin D deficiency < 25 and < 37.5 nmol/L was 13.6 and 36.5%, respectively. Children who met or exceeded the adequate intake, those who consumed 2 or more milk servings (1 serving = 250 mL), and those who lived in households without crowding (47.7%) had a better vitamin D status than those who did not. The predictors of vitamin D status were dietary intake and age. Given low traditional food consumption and low consumption of milk, interventions promoting vitamin D supplementation may be required.

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    Russian Journal of Genetics: Applied Research 09/2014; 4(5):397-404. DOI:10.1134/S2079059714050074
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    • "Life in the Arctic environment poses special challenges to vitamin D homeostasis (17,37). Hunter populations have lived in Greenland for a thousand years without vitamin D supplementation. "
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    08/2013; 72. DOI:10.3402/ijch.v72i0.21225
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    • "The nutritional adequacy of Inuit women's diets during pregnancy and while lactating was assessed along with access to traditional foods. Deficiencies were present in magnesium, zinc, calcium, folate, and vitamins E, A, C (54,55), and D (56). One study demonstrated that traditional food contributed more to the diets of older Inuit women (aged 40–74) compared to younger Inuit women (18–39), where market food provided more to women's energy intake (57). "
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