ArticlePublic health nutrition2018
Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents.
Article in Public health nutrition, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Pre-existing osteoporosis and serum vitamin D levels in patients with distal radius fractures: are we missing something?Archives of orthopaedic and trauma surgery · 2024Trial
- Vitamin D Serum Status and Associated Factors Among Women with Cervical Lesions.Epidemiologia (Basel, Switzerland) · 2026Article
- Dietary vitamin D intake and serum 25(OH)D concentrations in Minangkabau pregnant women: results from the vitamin D pregnant mothers (VDPM) cohort study in Indonesia.BMC pregnancy and childbirth · 2026Article
- Is There a Need for Vitamin D Supplements During Summer Time in Northern Germany? A Study of Hospitalised Fracture Patients.Nutrients · 2024Article
- Vitamin D food fortification in European countries: the underused potential to prevent cancer deaths.European journal of epidemiology · 2022Review
- Dietary vitamin D and calcium and periodontitis: A population-based study.Frontiers in nutrition · 2022Article
- Low Maternal Vitamin D and Calcium Food Intake during Pregnancy Associated with Place of Residence: A Cross-Sectional Study in West Sumatran Women, Indonesia.Open access Macedonian journal of medical sciences · 2019Article
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Authors and funding
7 authors.
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No grant is acknowledged in the PubMed record.
Abstract
objectiveTo understand the relationship between vitamin D intake and serum 25-hydroxyvitamin D (25(OH)D) levels in a sample of Portuguese adolescents.
designCross-sectional evaluation carried out in the 2003/2004 school year. Vitamin D intake was assessed by an FFQ and 25(OH)D was measured in a fasting blood sample.
settingPublic and private schools in Porto, Portugal. SUBJECTS: Adolescents aged 13 years (n 521) enrolled at school (EPITeen cohort).
resultsBoth mean (sd) intake and serum 25(OH)D level were far below the recommended, 4·47 (2·49) µg/d and 16·5 (5·7) ng/ml, respectively. A significant difference in serum level was found according to season, with lower values in winter than summer (14·8 (4·6) v. 17·3 (5·9) ng/ml, P<0·001). Vitamin D intake was weakly correlated with serum 25(OH)D (r=0·056, P=0·203).
conclusionsDietary vitamin D and serum 25(OH)D levels were positively but weakly correlated and the error was higher among those with higher serum 25(OH)D concentration. Our results support the need for strategies that promote increase of the most important food sources of vitamin D to reduce the high prevalence of low vitamin D status.
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