nutrients Article
Seasonal Epidemiology of Serum 25-Hydroxyvitamin D Concentrations among Healthy Adults Living in Rural and Urban Areas in Mongolia Sabri Bromage 1, *, Janet W. Rich-Edwards 2 , Daria Tselmen 3 , Ana Baylin 4 , Lisa A. Houghton 5 , Nachin Baasanjav 3 and Davaasambuu Ganmaa 6 1 2 3 4 5 6
*
Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA Connors Center for Women’s Health and Gender Biology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; [email protected] National Institute of Medical Sciences, Ulaanbaatar 16081, Mongolia; [email protected] (D.T.); [email protected] (N.B.) Departments of Epidemiology and Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; [email protected] Department of Human Nutrition, University of Otago, Dunedin 9054, New Zealand; [email protected] Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA; [email protected] Correspondence: [email protected]; Tel.: +1-646-361-0628
Received: 26 August 2016; Accepted: 18 September 2016; Published: 23 September 2016
Abstract: Many factors put Mongolians at risk of vitamin D deficiency. Despite low levels observed in Mongolian children and pregnant women, there are few data published on the vitamin D status of non-pregnant adults. Between summer 2011 and winter 2013, paired summer and winter blood samples were collected from 320 healthy men and women (20–58 years) living in eight Mongolian provinces. Mean serum 25(OH)D concentrations were 22.5 ng/mL (95% CI: 14.5, 32.5) in summer and 7.7 ng/mL (95% CI: 4.6, 10.8) in winter, with a distribution (
Seasonal Epidemiology of Serum 25-Hydroxyvitamin D Concentrations among Healthy Adults Living in Rural and Urban Areas in Mongolia Sabri Bromage 1, *, Janet W. Rich-Edwards 2 , Daria Tselmen 3 , Ana Baylin 4 , Lisa A. Houghton 5 , Nachin Baasanjav 3 and Davaasambuu Ganmaa 6 1 2 3 4 5 6
*
Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02115, USA Connors Center for Women’s Health and Gender Biology, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA 02115, USA; [email protected] National Institute of Medical Sciences, Ulaanbaatar 16081, Mongolia; [email protected] (D.T.); [email protected] (N.B.) Departments of Epidemiology and Nutritional Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; [email protected] Department of Human Nutrition, University of Otago, Dunedin 9054, New Zealand; [email protected] Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115, USA; [email protected] Correspondence: [email protected]; Tel.: +1-646-361-0628
Received: 26 August 2016; Accepted: 18 September 2016; Published: 23 September 2016
Abstract: Many factors put Mongolians at risk of vitamin D deficiency. Despite low levels observed in Mongolian children and pregnant women, there are few data published on the vitamin D status of non-pregnant adults. Between summer 2011 and winter 2013, paired summer and winter blood samples were collected from 320 healthy men and women (20–58 years) living in eight Mongolian provinces. Mean serum 25(OH)D concentrations were 22.5 ng/mL (95% CI: 14.5, 32.5) in summer and 7.7 ng/mL (95% CI: 4.6, 10.8) in winter, with a distribution (
