Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10216/115144 |
Resumo: | Objective: To understand the relationship between vitamin D intake and serum 25-hydroxyvitamin D (25(OH)D) levels in a sample of Portuguese adolescents. Design: Cross-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. Setting: Public and private schools in Porto, Portugal. Subjects: Adolescents aged 13 years (n 521) enrolled at school (EPITeen cohort). Results: Both 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). Conclusions: Dietary 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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Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescentsVitamin D - IntakeSerum 25-hydroxyvitamin DObjective: To understand the relationship between vitamin D intake and serum 25-hydroxyvitamin D (25(OH)D) levels in a sample of Portuguese adolescents. Design: Cross-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. Setting: Public and private schools in Porto, Portugal. Subjects: Adolescents aged 13 years (n 521) enrolled at school (EPITeen cohort). Results: Both 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). Conclusions: Dietary 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.20182018-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10216/115144eng1475-272710.1017/S1368980017002804Cabral, MAraújo, JLopes, CBarros, HGuimarães, JTSevero, MRamos, Einfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-11-29T14:51:49Zoai:repositorio-aberto.up.pt:10216/115144Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T00:10:21.957072Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents |
title |
Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents |
spellingShingle |
Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents Cabral, M Vitamin D - Intake Serum 25-hydroxyvitamin D |
title_short |
Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents |
title_full |
Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents |
title_fullStr |
Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents |
title_full_unstemmed |
Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents |
title_sort |
Relationship between dietary vitamin D and serum 25-hydroxyvitamin D levels in Portuguese adolescents |
author |
Cabral, M |
author_facet |
Cabral, M Araújo, J Lopes, C Barros, H Guimarães, JT Severo, M Ramos, E |
author_role |
author |
author2 |
Araújo, J Lopes, C Barros, H Guimarães, JT Severo, M Ramos, E |
author2_role |
author author author author author author |
dc.contributor.author.fl_str_mv |
Cabral, M Araújo, J Lopes, C Barros, H Guimarães, JT Severo, M Ramos, E |
dc.subject.por.fl_str_mv |
Vitamin D - Intake Serum 25-hydroxyvitamin D |
topic |
Vitamin D - Intake Serum 25-hydroxyvitamin D |
description |
Objective: To understand the relationship between vitamin D intake and serum 25-hydroxyvitamin D (25(OH)D) levels in a sample of Portuguese adolescents. Design: Cross-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. Setting: Public and private schools in Porto, Portugal. Subjects: Adolescents aged 13 years (n 521) enrolled at school (EPITeen cohort). Results: Both 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). Conclusions: Dietary 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. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018 2018-01-01T00:00:00Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10216/115144 |
url |
http://hdl.handle.net/10216/115144 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
1475-2727 10.1017/S1368980017002804 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136027819900928 |