Vitamin D Intake and Cardiometabolic Risk Factors in Adolescents

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Carla Moreira (Author) Other; Pedro Moreira (Author) FCNAUP; Sandra Abreu (Author) Other; Paula C Santos (Author) Other; Isabel Moreira Silva (Author) Other; Susana Povoas (Author) Other; Jorge Mota (Author) Other; Rute Santos (Author) Other

Journal

Title: Metabolic Syndrome and Related Disorders

Vol. 12

Pages: 171-177

ISSN: 1540-4196

Publisher: Mary Ann Liebert

Indexing

ISI Web of Knowledge - 4 Citations

Scopus - 4 Citations

Scientific classification

FOS: Medical and Health sciences > Other medical sciences

Other information

Authenticus ID: P-009-801

DOI: 10.1089/met.2013.0065

Abstract (EN): Abstracrt Background: A growing body of research suggests that vitamin D might play an important role in overall health. No data exist on vitamin D intake for the Azorean adolescent population. The purpose of this study was to assess vitamin D intake and investigate a possible association between vitamin D intake and cardiometabolic risk factors in Azorean adolescents. Methods: A cross-sectional school-based study was conducted on 496 adolescents (288 girls) aged 15-18 years from the Azorean Islands, Portugal. Anthropometric measurements (waist circumference and height), blood pressure (systolic), and plasma biomarkers [fasting glucose, insulin, total cholesterol (TC), high-density lipoprotein cholesterol (HDL-C), and triglycerides (TGs)] were measured to assess metabolic risk. Homeostasis model assessment (HOMA), TC-to-HDL-C ratio, and waist-to-height ratio were calculated. For each of these variables, a Z-score was computed by age and sex. A metabolic risk score was constructed by summing the Z-scores of all individual risk factors. High risk was considered when the individual had >= 1 standard deviation (SD) of this score. Vitamin D intake was assessed with a semiquantitative food frequency questionnaire. Participants were classified into quartiles of vitamin D intake. Logistic regression was used to determine odds ratios for high cardiometabolic risk scores after adjusting for total energy intake, pubertal stage, fat mass percentage, and cardiorespiratory fitness. Results: Mean (SD) vitamin D intake was 5.8 (6.5) mu g/day, and 9.1% of Azorean adolescents achieved the estimated average requirement of vitamin D (10 mu g/day or 400 IU). Logistic regression showed that the odds ratio for a high cardiometabolic risk score was 3.35 [95% confidence interval (CI) 1.28-8.75] for adolescents in the lowest vitamin D intake quartile in comparison with those in the highest vitamin D intake quartile, even after adjustment for confounders. Conclusion: A lower level of vitamin D intake was associated with worse metabolic profile among Azorean adolescents.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7