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Healthy changes in some cardiometabolic risk factors accompany the higher summertime serum 25-hydroxyvitamin D concentrations in Iranian children: National Food and Nutrition Surveillance
| Content Provider | Scilit |
|---|---|
| Author | Nikooyeh, Bahareh Abdollahi, Zahra Hajifaraji, Majid Alavi-Majd, Hamid Salehi, Forouzan Yarparvar, Amir Hossein Neyestani, Tirang R. |
| Copyright Year | 2018 |
| Description | Objective: To investigate seasonal variations of vitamin D status at different latitudes and if these changes are accompanied by corresponding variations in certain health parameters in children living in a broad latitudinal range in Iran.Design: Longitudinal study.Subjects: In total, 530 apparently healthy children aged 5–18 years were randomly selected from six regions of Iran with a latitudinal gradient from 29°N to 37·5°N. All anthropometric and biochemical assessments were performed twice during a year (summer, winter). High BMI (Z-score >1), low HDL cholesterol (<40 mg/dl, males; 150 mg/dl) were considered cardiometabolic risk factors.Results: Serum 25-hydroxyvitamin D (25(OH)D) showed between-season variation, with significantly higher concentrations (mean (sd)) in summer v. winter (43 (29) v. 27 (18) nmol/l; P<0·001). Change of circulating 25(OH)D between summer and winter was negatively correlated with change of BMI (r=−0·16; P<0·001), TAG (r=−0·09; P=0·04) and total cholesterol (r=−0·10; P=0·02) and directly correlated with change of height-for-age Z-score (r=0·09; P=0·04). Multiple stepwise linear regression analysis (β; 95 % CI) showed that winter serum 25(OH)D (−0·3; −0·4, −0·2; P<0·001), gender (boys v. girls: 9·7; 5·2, 14·1; P33°N v. <33°N: 4·5; 0·09, 9·0; P=0·04) were predictors of change of serum 25(OH)D between two seasons.Conclusions: Summertime improvement of vitamin D status was accompanied by certain improved cardiometabolic risk factors, notably serum TAG, total cholesterol and BMI, in children. |
| Related Links | https://www.cambridge.org/core/services/aop-cambridge-core/content/view/A5E622E8B168C36B021A7B2330DCC053/S1368980018000630a.pdf/div-class-title-healthy-changes-in-some-cardiometabolic-risk-factors-accompany-the-higher-summertime-serum-25-hydroxyvitamin-d-concentrations-in-iranian-children-national-food-and-nutrition-surveillance-div.pdf |
| Ending Page | 2021 |
| Page Count | 9 |
| Starting Page | 2013 |
| ISSN | 13689800 |
| e-ISSN | 14752727 |
| DOI | 10.1017/s1368980018000630 |
| Journal | Public Health Nutrition |
| Issue Number | 11 |
| Volume Number | 21 |
| Language | English |
| Publisher | Cambridge University Press (CUP) |
| Publisher Date | 2018-08-01 |
| Access Restriction | Open |
| Subject Keyword | Public Health Nutrition Nutrition and Dietetics Vitamin D Seasonal Variation Cardiometabolic Risk Factors |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nutrition and Dietetics Public Health, Environmental and Occupational Health |
