Prevalence of Vitamin D Insufficiency in Brazilian Adolescents

Background/Aims: Cutaneous sun exposure and dietary vitamin D intake are important determinants of vitamin D status. The objective of the present study was to evaluate the vitamin D status of a group of healthy adolescent students living in Brazil. Methods: One hundred and thirty-six adolescents, 64 boys and 72 girls, aged 16-20 years old, living in a rural town in the state of Sao Paulo, Brazil, participated in this study. Results: The mean dietary vitamin D intake was 140 (120-156) IU/day [3.5 (3.0-3.9) mu g/day]. Only 14.9% of the students met the daily adequate intake recommendation of vitamin D. Only 27.9% practice physical activity outdoors and 17.6% of the adolescents apply sunscreen daily. The mean 25(OH)D concentration was 73.0 (22.0) nmol/l [29.2 (8.8) ng/ml]. Vitamin D insufficiency was observed in 60% of adolescents. Conclusions: The present study suggests that even in a sunny climate like Brazil the prevalence of vitamin D insufficiency in adolescents is high. Most likely this is due to low intakes of vitamin D in this group. Due to the limited extent of natural dietary sources of vitamin D, a policy of vitamin D food fortification should be considered in the future, and in the meantime greater use of vitamin D supplements in this population group should be encouraged to provide the increased amounts of this essential nutrient for optimal health. Copyright (C) 2009 S. Karger AG, Basel

Synthesis and characterization of alpha-nickel (II) hydroxide particles on organic-inorganic matrix and its application in a sensitive electrochemical sensor for vitamin D determination

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

The identity of Hyla leucotaenia Burmeister, 1861 (Anura: Hylidae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Influência da temperatura nas respostas aos biocidas diazinon e carbaril em Dilocarcinus pagei Stimpson, 1861

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A system for 3-D reconstruction of a patient-specific surface model from calibrated X-ray images

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hrsg. von R. Höinghaus

David Friedländer : sein Leben u. sein Wirken im Zusammenhange mit d. gleichzeitigen Culturverhältnissen u. Reformbestrebungen um Judenthum

dargestellt von Emmanuel Heinrich Ritter

Die Judenfrage vor Gericht : Klage d. deutsch-israelitischen Gemeindebundes in Leipzig gegen Autor u. Verleger d. "Egon Waldegg'schen Judenfrage" ; nach d. Proceßacten veröff.

von R. von Grumbkow

Darké Noam : Leitfaden z. Religionslehre f. israelit. Schulen, mit steter Hinweisung auf d. Handbuch Pikude H. oder: d. göttlichen Gesetze

Gerson Lasch