| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
|
|
|
|||||||
|
|||||||||
Original Research Communication |
1 From the Department of Food Science and Technology, University of New South Wales, New South Wales, Australia; the Department of Animal Science, University of Sydney, Sydney, Australia; and the Chinese Academy of Preventive Medicine and Beijing Ji Shui Tan Hospital, Beijing.
Background: Several locally published reports indicate a high prevalence of vitamin D deficiency among adolescents in China, but no systematic population-based survey has been conducted.
Objective: The objective was to determine the prevalence of vitamin D deficiency and to study associated factors in adolescent girls in Beijing.
Design: A cross-sectional study was conducted in a random sample of 1248 Beijing girls aged 12–14 y. Nutrient intakes, ultraviolet light exposure, anthropometric characteristics, physical activity, signs and symptoms of rickets, and plasma concentrations of 25-hydroxyvitamin D, 1,25-dihydroxyvitamin D, and calcium were measured and X-rays of the hand and wrist were taken.
Results: The prevalence of clinical vitamin D and calcium deficiency (plasma 25-hydroxyvitamin D <12.5 nmol/L, plasma calcium <2.25 mmol/L, and muscle spasm at least once per week) was 9.4% in winter. The prevalence of subclinical vitamin D deficiency (25-hydroxyvitamin D <12.5 nmol/L) was 45.2% in winter and 6.7% in summer (P < 0.0005). Logistic regression analysis showed that subclinical and clinical vitamin D deficiency in winter were associated with low plasma 25-hydroxyvitamin D concentrations (<12.5 nmol/L) in summer, low calcium intake (
± SD: 280 ± 48 compared with 440 ± 61 mg/d), and low plasma calcium concentrations (<2.25 mmol/L) in winter. The odds ratios for these associations were 3.1, 1.5, and 1.5, respectively.
Conclusions: Subclinical vitamin D deficiency was widespread among Beijing adolescent girls in winter. Low plasma 25-hydroxyvitamin D concentrations in summer, low calcium intake, and low plasma calcium concentrations in winter were the main risk factors for vitamin D deficiency in winter.
Key Words: Vitamin D deficiency • adolescent girls • China • calcium intake • vitamin D intake • sunlight exposure • 25-hydroxyvitamin D • plasma calcium
This article has been cited by other articles:
|
|
 |
|
  R. Vieth, H. Bischoff-Ferrari, B. J Boucher, B. Dawson-Hughes, C. F Garland, R. P Heaney, M. F Holick, B. W Hollis, C. Lamberg-Allardt, J. J McGrath, et al. The urgent need to recommend an intake of vitamin D that is effective Am. J. Clinical Nutrition, March 1, 2007; 85(3): 649 - 650. [Full Text] [PDF]
|
|
|
|
|
|
C. M Willis, E. M Laing, D. B Hall, D. B Hausman, and R. D Lewis A prospective analysis of plasma 25-hydroxyvitamin D concentrations in white and black prepubertal females in the southeastern United States Am. J. Clinical Nutrition, January 1, 2007; 85(1): 124 - 130. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. E. Rockell, T. J. Green, C. M. Skeaff, S. J. Whiting, R. W. Taylor, S. M. Williams, W. R. Parnell, R. Scragg, N. Wilson, D. Schaaf, et al. Season and Ethnicity Are Determinants of Serum 25-Hydroxyvitamin D Concentrations in New Zealand Children Aged 5-14 y J. Nutr., November 1, 2005; 135(11): 2602 - 2608. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
F. A. Tylavsky, K. A. Ryder, A. Lyytikainen, and S. Cheng Vitamin D, Parathyroid Hormone, and Bone Mass in Adolescents J. Nutr., November 1, 2005; 135(11): 2735S - 2738S. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. K Marwaha, N. Tandon, D. R. H. Reddy, R. Aggarwal, R. Singh, R. C Sawhney, B. Saluja, M A. Ganie, and S. Singh Vitamin D and bone mineral density status of healthy schoolchildren in northern India Am. J. Clinical Nutrition, August 1, 2005; 82(2): 477 - 482. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Hatun, O. Islam, F. Cizmecioglu, B. Kara, K. Babaoglu, F. Berk, and A. S. Gokalp Subclinical Vitamin D Deficiency Is Increased in Adolescent Girls Who Wear Concealing Clothing J. Nutr., February 1, 2005; 135(2): 218 - 222. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
M. S. Calvo, S. J. Whiting, and C. N. Barton Vitamin D Intake: A Global Perspective of Current Status J. Nutr., February 1, 2005; 135(2): 310 - 316. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
J. M Pettifor Nutritional rickets: deficiency of vitamin D, calcium, or both? Am. J. Clinical Nutrition, December 1, 2004; 80(6): 1725S - 1729S. [Abstract] [Full Text] [PDF]
|
|
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |
