Adults at 12? Trends in puberty and their public health consequences

Bellis, Mark A; Downing, Jennifer; Ashton, John

doi:10.1136/jech.2006.049379

Cited by 86 publications

(60 citation statements)

References 11 publications

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“…Average age at menarche in girls is estimated to be between 11.5 and 13 years and to have occurred by 14 years of age for the majority of girls [30, 31]. A secular trend towards earlier age at menarche in girls, and therefore earlier onset of puberty, has been previously reported [32–34]. Boys tend to enter puberty slightly later than girls with age at peak height velocity indicating an average age of 14 years[35].…”

Section: Discussionmentioning

confidence: 99%

Sex discordance in asthma and wheeze prevalence in two longitudinal cohorts

et al. 2017

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Sex discordance in asthma prevalence has been previously reported, with higher prevalence in males before puberty, and in females after puberty; the adolescent “switch”. However, cross-sectional studies have suggested a narrowing of this discordance in recent decades. We used a combination of cross-sectional and longitudinal modelling to examine sex differences in asthma, wheeze and longitudinal wheezing phenotypes in two UK birth cohorts, the Avon Longitudinal Study of Parents and Children (ALSPAC; born 1991–92 with data from age 0–18 years) and the Millennium Cohort Study (MCS; born 2000–02 with data from age 3–10 years). We derived measures of asthma and wheeze from questionnaires completed by mothers and cohort children. Previously-derived ALSPAC wheezing phenotype models were applied to MCS. Males had a higher prevalence of asthma at 10.7 years in ALSPAC (OR 1.45 95%CI: 1.26, 1.66 n = 7778 for current asthma) and MCS (OR 1.42 95%CI: 1.29, 1.56 n = 6726 for asthma ever) compared to females, decreasing in ALSPAC after puberty (OR 0.94 95%CI: 0.79, 1.11 n = 5023 for current asthma at 16.5 years). In longitudinal models using restricted cubic splines, males had a clear excess for asthma in the last 12 months and wheeze in the last 12 months up until 16.5 years of age in ALSPAC. Males had an increased risk of all derived longitudinal wheezing phenotypes in MCS when compared to never wheeze and no evidence of being at lower risk of late wheeze when compared to early wheeze. By comparing data in two large, contemporary cohorts we have shown the persistence of sex discordance in childhood asthma, with no evidence that the sex discordance is narrowing in recent cohorts.

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Section: Discussionmentioning

confidence: 99%

Sex discordance in asthma and wheeze prevalence in two longitudinal cohorts

et al. 2017

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“…If social development lags behind physical development, understanding their role in society might be more complicated for adolescents and result in psychological distress. The greater the mismatches between physical development and social development, the greater the adolescent distresses might be (Bellis et al, 2006). Cultural differences in social demands on adolescents and young adults, especially differences in expectations on young women to achieve autonomy, might influence the dissociation of physical and social puberty.…”

Section: Discussionmentioning

confidence: 95%

Comparison of the Eating Disorder Inventory (EDI) in the Netherlands, Austria and Italy

Waldherr

Favaro

Santonastaso

et al. 2008

Euro Eating Disorders Rev

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“…The temporal division between physical development and social maturity, social responsibility, and independence may be contributing factors 15) . Such divisions can be complicated when formal education on sexual risktaking or discussions with parents are delayed as public institutions and parents fail to recognize earlier pubertal onset.…”

Section: Discussionmentioning

confidence: 99%

The effect of first nocturnal ejaculation timing on risk and sexual behaviors of Korean male adolescents

Lee

Yang

Chueh

et al. 2018

Ann Pediatr Endocrinol Metab

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Purpose: This study evaluated the effect of first nocturnal ejaculation timing on risk and sexual behaviors of Korean male adolescents. Methods: We analyzed data from the 10th edition of the Korea Youth Risk Behavior Web-based survey that was conducted with male high school adolescents in grades 10-12. The survey included 17,907 adolescents, and 10,326 responded their experience of first nocturnal ejaculation. Of these, 595 had their first nocturnal ejaculation in ≤grade 4 ("early puberty") and 9,731 had their first nocturnal ejaculation in ≥grade 5 ("normal puberty"). We analyzed differences between these 2 groups in risk and sexual behaviors. Results: Early first nocturnal ejaculation showed a positive association with sexual intercourse (odds ratio [OR], 3.27; 95% confidence interval [CI], 2.56-4.17), sexual debut at elementary school age (OR, 7.45; 95% CI, 5.00-11.10), and having had a sexually transmitted disease (OR, 6.60; 95% CI, 3.94-11.08). After a multiple logistic regression to adjust for socio-demographic variables, early first nocturnal ejaculation was still positively associated with sexual intercourse (OR, 2.73; 95% CI, 2.03-3.69), sexual debut at elementary school age (OR, 5.96; 95% CI, 3.47-10.22), and having had a sexually transmitted disease (OR, 5.17; 95% CI, 2.52-10.20). Early first nocturnal ejaculation was positively associated with alcohol consumption, smoking, and substance use. However, this was not statistically significant after adjusting for several socio-demographic variables. Conclusion: There is a positive association between early nocturnal ejaculation and sexual behaviors in male adolescents. Proactive education about sexual behaviors is required for adolescents who reach sexual maturity early.

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Adults at 12? Trends in puberty and their public health consequences

Cited by 86 publications

References 11 publications

Sex discordance in asthma and wheeze prevalence in two longitudinal cohorts

Sex discordance in asthma and wheeze prevalence in two longitudinal cohorts

Comparison of the Eating Disorder Inventory (EDI) in the Netherlands, Austria and Italy

The effect of first nocturnal ejaculation timing on risk and sexual behaviors of Korean male adolescents

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