Association of vitamin D insufficiency with adiposity and metabolic disorders in Brazilian adolescents
Autor: | Renata M S, Oliveira, Juliana F, Novaes, Luiza M, Azeredo, Lorena M, Azeredo, Ana Paula C, Cândido, Isabel C G, Leite |
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Rok vydání: | 2013 |
Předmět: |
Male
medicine.medical_specialty Adolescent Nutritional Status Medicine (miscellaneous) Blood lipids Parathyroid hormone Motor Activity Overweight Recommended Dietary Allowances vitamin D deficiency Body Mass Index Insulin resistance Metabolic Diseases Internal medicine Prevalence medicine Vitamin D and neurology Humans Vitamin D Abdominal obesity Adiposity Nutrition and Dietetics business.industry Body Weight Public Health Environmental and Occupational Health Vitamin D Deficiency medicine.disease Diet Records Cross-Sectional Studies Nutrition Assessment Endocrinology Parathyroid Hormone Dietary Supplements Body Composition Sunlight Female Insulin Resistance medicine.symptom Energy Intake business Body mass index Brazil |
Zdroj: | Public Health Nutrition. 17:787-794 |
ISSN: | 1475-2727 1368-9800 |
Popis: | ObjectiveThe present study aimed to evaluate the frequency of deficiency/insufficiency of vitamin D in adolescents and its relationship to overweight and metabolic disorders.DesignCross-sectional study. Nutritional status was assessed by BMI according to WHO recommendations. Dietary intake was evaluated using a 3 d dietary record. The biochemical evaluation comprised measurements of serum lipids, lipoproteins, glucose, insulin, calcidiol (25(OH)D) and parathyroid hormone. Insulin resistance was calculated using the homeostasis model assessment. Body composition and blood pressure were assessed.SettingFifteen schools (eight public and seven private) in the central city of Juiz de Fora, Brazil.SubjectsThe analysis included a study population of 160 adolescents (seventy-seven eutrophic and eighty-three overweight) aged 15 to 17 years.ResultsVitamin D deficiency and insufficiency was observed in 1·25 and 70·6 % of adolescents, respectively. Serum 25(OH)D levels were statistically lower in adolescents with weight excess, abdominal obesity, hypercholesterolaemia, higher levels of parathyroid hormone, insulin resistance, hyperinsulinaemia and hypertension (P< 0·05). Lower BMI and waist circumference were observed in the third (highest) tertile of vitamin D intake for all adolescents. The high prevalence of vitamin D insufficiency is primarily nutritional and reflects a low vitamin D intake.ConclusionsOur results support the negative association among serum 25(OH)D levels and vitamin D intake with non-skeletal outcomes in Brazilian adolescents. Vitamin D fortification of foods and/or the use of vitamin D supplements need to be considered to raise vitamin D intake in the adolescent population, even in a sunny country like Brazil. |
Databáze: | OpenAIRE |
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