全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
-  2019 

Determinants of serum 25-hydroxyvitamin D levels in healthy young adults living in the Western Cape, South Africa

DOI: https://doi.org/10.1080/20786190.2019.1621047

Full-Text   Cite this paper   Add to My Lib

Abstract:

Background: Vitamin D deficiency is fast emerging as a global pandemic. In South Africa few studies have been conducted to determine the vitamin D status of the healthy population. Methods: This prospective study with an analytical component investigated vitamin D status of healthy undergraduate students at two time points (winter and summer) at Stellenbosch University. Serum 25(OH)D was determined, anthropometric measurements taken and dietary vitamin D intake estimated (food-frequency questionnaire). Skin tone was determined (Fitzpatrick skin type classification), and a skin reflectometry device used to measure dermal melanin content. Results: Results of 242 students indicated a mean serum 25(OH)D of 63.80?±?41.35?ng/ml and a high prevalence of vitamin D sufficiency (88%). Significantly more females experienced suboptimal vitamin D levels than males (18 vs. 5%; p?<?0.01). Participants with lighter skin tones had higher levels of 25(OH)D than those with darker skin tones (chi-square?=?24.02; p?=?0.02). The majority (60.74%) had a normal BMI, although there was no significant relationship between BMI and serum 25(OH)D (Spearman’s r?=?–0.11; p?=?0.09). Total mean dietary vitamin D intake was 7.99?±?13.81?mcg, with 87.2% having inadequate intake (< 15?mcg). The relationship between total vitamin D intake and serum 25(OH)D was found to be significant in winter (p?<?0.001) and summer (p?=?0.01). Serum vitamin D levels were significantly higher in the winter phase (p?<?0.001). Conclusions: A low prevalence of vitamin D deficiency was found amongst healthy young adults, despite low dietary vitamin D intakes. Significant relationships were found between serum 25(OH)D and gender, skin tone and vitamin D intake. Further studies need to be conducted, especially in high-risk groups, before results are applied to the greater South African public

Full-Text

comments powered by Disqus

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133

WeChat 1538708413