Age at puberty and the emerging obesity epidemic.

<h4>Background</h4>Recent studies have shown that puberty starts at younger ages than previously. It has been hypothesized that the increasing prevalence of childhood obesity is contributing to this trend. The purpose of this study was to analyze the association between prepubertal body...

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Autores principales:	Lise Aksglaede, Anders Juul, Lina W Olsen, Thorkild I A Sørensen
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2009
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a3ba5dbef7804cc090be4636778dd384
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spelling	oai:doaj.org-article:a3ba5dbef7804cc090be4636778dd3842021-11-25T06:27:08ZAge at puberty and the emerging obesity epidemic.1932-620310.1371/journal.pone.0008450https://doaj.org/article/a3ba5dbef7804cc090be4636778dd3842009-12-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/20041184/?tool=EBIhttps://doaj.org/toc/1932-6203<h4>Background</h4>Recent studies have shown that puberty starts at younger ages than previously. It has been hypothesized that the increasing prevalence of childhood obesity is contributing to this trend. The purpose of this study was to analyze the association between prepubertal body mass index (BMI) and pubertal timing, as assessed by age at onset of pubertal growth spurt (OGS) and at peak height velocity (PHV), and the secular trend of pubertal timing given the prepubertal BMI.<h4>Methodology/principal findings</h4>Annual measurements of height and weight were available in all children born from 1930 to 1969 who attended primary school in the Copenhagen municipality; 156,835 children fulfilled the criteria for determining age at OGS and PHV. The effect of prepubertal BMI at age seven on these markers of pubertal development within and between birth cohorts was analyzed. BMI at seven years was significantly inversely associated with age at OGS and PHV. Dividing the children into five levels of prepubertal BMI, we found a similar secular trend toward earlier maturation in all BMI groups.<h4>Conclusion/significance</h4>The heavier both boys and girls were at age seven, the earlier they entered puberty. Irrespective of level of BMI at age seven, there was a downward trend in the age at attaining puberty in both boys and girls, which suggests that the obesity epidemic is not solely responsible for the trend.Lise AksglaedeAnders JuulLina W OlsenThorkild I A SørensenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 4, Iss 12, p e8450 (2009)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lise Aksglaede Anders Juul Lina W Olsen Thorkild I A Sørensen Age at puberty and the emerging obesity epidemic.
description	<h4>Background</h4>Recent studies have shown that puberty starts at younger ages than previously. It has been hypothesized that the increasing prevalence of childhood obesity is contributing to this trend. The purpose of this study was to analyze the association between prepubertal body mass index (BMI) and pubertal timing, as assessed by age at onset of pubertal growth spurt (OGS) and at peak height velocity (PHV), and the secular trend of pubertal timing given the prepubertal BMI.<h4>Methodology/principal findings</h4>Annual measurements of height and weight were available in all children born from 1930 to 1969 who attended primary school in the Copenhagen municipality; 156,835 children fulfilled the criteria for determining age at OGS and PHV. The effect of prepubertal BMI at age seven on these markers of pubertal development within and between birth cohorts was analyzed. BMI at seven years was significantly inversely associated with age at OGS and PHV. Dividing the children into five levels of prepubertal BMI, we found a similar secular trend toward earlier maturation in all BMI groups.<h4>Conclusion/significance</h4>The heavier both boys and girls were at age seven, the earlier they entered puberty. Irrespective of level of BMI at age seven, there was a downward trend in the age at attaining puberty in both boys and girls, which suggests that the obesity epidemic is not solely responsible for the trend.
format	article
author	Lise Aksglaede Anders Juul Lina W Olsen Thorkild I A Sørensen
author_facet	Lise Aksglaede Anders Juul Lina W Olsen Thorkild I A Sørensen
author_sort	Lise Aksglaede
title	Age at puberty and the emerging obesity epidemic.
title_short	Age at puberty and the emerging obesity epidemic.
title_full	Age at puberty and the emerging obesity epidemic.
title_fullStr	Age at puberty and the emerging obesity epidemic.
title_full_unstemmed	Age at puberty and the emerging obesity epidemic.
title_sort	age at puberty and the emerging obesity epidemic.
publisher	Public Library of Science (PLoS)
publishDate	2009
url	https://doaj.org/article/a3ba5dbef7804cc090be4636778dd384
work_keys_str_mv	AT liseaksglaede ageatpubertyandtheemergingobesityepidemic AT andersjuul ageatpubertyandtheemergingobesityepidemic AT linawolsen ageatpubertyandtheemergingobesityepidemic AT thorkildiasørensen ageatpubertyandtheemergingobesityepidemic
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Age at puberty and the emerging obesity epidemic.

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