Very high rates of vitamin D insufficiency in women of child-bearing age living in Beijing and Hong Kong

We aimed to describe the vitamin D status of young women living in two Chinese cities in the spring – Beijing in the north (latitude 39° north) and Hong Kong (latitude 22° north) in the south. We also examined the relationship between serum 25-hydroxyvitamin D and parathyroid hormone (PTH) concentra...

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Bibliographic Details
Published in:British journal of nutrition 2008-06, Vol.99 (6), p.1330-1334
Main Authors: Woo, Jean, Lam, Christopher W. K., Leung, Jason, Lau, Winny Y., Lau, Edith, Ling, Xu, Xing, Xiaoping, He Zhao, Xi, Murray Skeaff , C., Bacon, Catherine J., Rockell, Jennifer E. P., Lambert, Aaron, Whiting, Susan J., Green, Timothy J.
Format: Article
Language:English
Subjects:
25-hydroxyergocalciferol
25-Hydroxyvitamin D
Adult
Biological and medical sciences
Calcium intake
Calcium, Dietary - administration & dosage
China
China - epidemiology
Diet
Diet Records
Feeding. Feeding behavior
Female
Fundamental and applied biological sciences. Psychology
Hong Kong - epidemiology
Humans
Linear Models
nutrition assessment
Nutritional Status
Parathyroid hormone
Parathyroid Hormone - blood
Prevalence
Seasons
Vertebrates: anatomy and physiology, studies on body, several organs or systems
Vitamin D
Vitamin D - analogs & derivatives
Vitamin D - blood
Vitamin D Deficiency - blood
Vitamin D Deficiency - epidemiology
vitamin deficiencies
Women
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Summary:We aimed to describe the vitamin D status of young women living in two Chinese cities in the spring – Beijing in the north (latitude 39° north) and Hong Kong (latitude 22° north) in the south. We also examined the relationship between serum 25-hydroxyvitamin D and parathyroid hormone (PTH) concentrations to determine a threshold for serum 25-hydroxyvitamin D above which there is no further suppression of PTH. Finally, we examined whether dietary Ca intake influences this relationship. Non-pregnant women aged 18–40 years (n 441) were recruited between February and June. Fasting blood was collected and dietary intakes were assessed using 5 d food records. Mean serum 25-hydroxyvitamin D concentration was lower in Beijing than Hong Kong women (29 v. 34 nmol/l; P 
ISSN:0007-1145
1475-2662
DOI:10.1017/S0007114507844382