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High Prevalence of Hypovitaminosis D in Adolescents Attending a Reference Centre for the Treatment of Obesity in Switzerland.


ABSTRACT:

Background

Hypovitaminosis D is common in populations with obesity. This study aimed at assessing (1) the prevalence of hypovitaminosis D and (2) the associations between vitamin D levels and cardiovascular risk factors in adolescents attending a reference centre for the treatment of obesity.

Design

Cross-sectional pilot study conducted in the paediatric obesity unit of the Lausanne university hospital, Switzerland.

Methods

Participants were considered eligible if they (1) were aged between 10 to 16.9 years and (2) consulted between 2017 and 2021. Participants were excluded if (1) they lacked vitamin D measurements or (2) the vitamin D measurement was performed one month after the base anthropometric assessment. Hypovitaminosis D was considered if the vitamin D level was <30 ng/mL (<75 nmol/L). Severe obesity was defined as a BMI z-score > 3 SD.

Results

We included 52 adolescents (31% girls, mean age 13 ± 2 years, 33% with severe obesity). The prevalence of hypovitaminosis D was 87.5% in girls and 88.9% in boys. The vitamin D levels were inversely associated with BMI, Spearman r and 95% CI: -0.286 (-0.555; -0.017), p = 0.037; they were not associated with the BMI z-score: -0.052 (-0.327; 0.224), p = 0.713. The vitamin D levels were negatively associated with the parathormone levels (-0.353 (-0.667; -0.039), p = 0.028) and positively associated with the calcium levels (0.385 (0.061; 0.708), p = 0.020), while no association was found between vitamin D levels and blood pressure and lipid or glucose levels.

Conclusion

almost 9 out of 10 adolescents with obesity in our cohort presented with hypovitaminosis D. Hypovitaminosis D does not seem to be associated with a higher cardiovascular risk profile in this group.

SUBMITTER: Patriota P 

PROVIDER: S-EPMC9601272 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature

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Publications

High Prevalence of Hypovitaminosis D in Adolescents Attending a Reference Centre for the Treatment of Obesity in Switzerland.

Patriota Pollyanna P   Borloz Sylvie S   Ruiz Inge I   Bouthors Thérèse T   Rezzi Serge S   Marques-Vidal Pedro P   Hauschild Michael M  

Children (Basel, Switzerland) 20221006 10


Background: Hypovitaminosis D is common in populations with obesity. This study aimed at assessing (1) the prevalence of hypovitaminosis D and (2) the associations between vitamin D levels and cardiovascular risk factors in adolescents attending a reference centre for the treatment of obesity. Design: Cross-sectional pilot study conducted in the paediatric obesity unit of the Lausanne university hospital, Switzerland. Methods: Participants were considered eligible if they (1) were aged between 1  ...[more]

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