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Hypertensive disorders in pregnancy and timing of pubertal development in daughters and sons
Lea Lykke Harrits Lunddorf1, Nis Brix1, Andreas Ernst1,2
1Department of Public Health, Research Unit for Epidemiology, Aarhus University, 8000 Aarhus C, Denmark.
Insights
Maternal hypertensive disorders may lead to earlier pubertal development in daughters. This study found no significant impact on sons' pubertal timing, suggesting a potential sex-specific effect.
Area of Science:
- Reproductive endocrinology
- Maternal-fetal medicine
- Pediatric development
Background:
- Existing literature shows mixed results on preeclampsia and pubertal timing in daughters, with no clear association in sons.
- Previous studies have not extensively explored other hypertensive disorders like hypertension, eclampsia, or HELLP syndrome in relation to pubertal timing.
Purpose of the Study:
- To investigate the association between maternal hypertensive disorders during pregnancy and pubertal development in daughters and sons.
- To examine specific hypertensive conditions, including preeclampsia, eclampsia, HELLP syndrome, and hypertension, and their impact on pubertal milestones.
Main Methods:
- A longitudinal cohort study of 15,819 mother-child pairs from the Danish National Birth Cohort.
- Maternal hypertensive disorders were recorded during pregnancy; pubertal development (Tanner stages, menarche, ejaculation, etc.) was self-reported by children from age 11 to 18.
- Compared pubertal timing in children exposed to maternal hypertensive disorders versus unexposed children, analyzing mean differences in age at pubertal milestones.
Main Results:
- Daughters of mothers with preeclampsia, eclampsia, or HELLP syndrome showed a tendency towards earlier pubertal timing (combined marker: -2.0 months).
- Daughters of mothers with hypertension also exhibited trends towards earlier pubertal milestones, though not statistically significant (combined marker: -1.0 months).
- No significant differences in pubertal timing were observed in sons of mothers with any hypertensive disorder.
Conclusions:
- Maternal hypertensive disorders during pregnancy may be associated with accelerated pubertal timing in daughters.
- The findings suggest a potential sex-specific effect, with no observed impact on sons' pubertal development.
- Further research is necessary to establish causality and understand the underlying mechanisms linking maternal hypertensive disorders to daughter's pubertal timing.
Study Question:
Do maternal hypertensive disorders affect pubertal development in daughters and sons?
Summary Answer:
Pubertal development tended to occur earlier in daughters of mothers with 'preeclampsia, eclampsia or HELLP syndrome' (hemolysis, elevated liver enzymes and low blood platelets) or hypertension in pregnancy compared to daughters born of normotensive mothers.
What Is Known Already:
The existing literature suggests some or no association between preeclampsia and pubertal development in daughters, but not in sons. None of the previous studies has investigated the possible association between other types of hypertensive disorders (hypertension, eclampsia or HELLP syndrome) and pubertal timing in children.
Study Design, Size, Duration:
Longitudinal cohort study consisting of 15 819 mother-child pairs with information on maternal hypertensive disorders collected during pregnancy and information on pubertal development collected half-yearly from the age of 11 years and until fully developed or 18 years of age.
Participants/Materials, Setting, Methods:
Participants are children from the Puberty Cohort nested within the Danish National Birth Cohort. The exposure was register-based and self-reported information on maternal hypertensive disorders during pregnancy. The outcomes were children's self-reported information on pubertal development, including Tanner stage 1-5 (pubic hair (both daughters and sons) and breast development (daughters) or genital development (sons)), first menstrual bleeding (daughters) or first ejaculation (sons), voice break episode (sons), axillary hair development and acne occurrence (both daughters and sons). The main outcome was mean difference in age at attaining each pubertal milestone and a combined pubertal marker in children of mothers with hypertensive disorders in pregnancy (either hypertension (n = 490), 'preeclampsia, eclampsia or HELLP syndrome' (n = 419) or 'unspecific hypertensive disorders' (n = 334) with unexposed children as reference (n = 14 576)).
Main Results And The Role Of Chance:
In daughters of mothers with 'preeclampsia, eclampsia or HELLP syndrome', we observed tendencies of earlier pubertal timing (combined marker: -2.0 (95% CI: -3.9; 0.0) months). In daughters of mothers with hypertension, several pubertal milestones tended to occur earlier than in daughters of normotensive mothers; however, all 95% CIs overlapped the null resulting in a combined pubertal marker of -1.0 (95% CI: -3.2; 1.1) months. In sons of mothers with any of the hypertensive disorders, we observed no difference in pubertal timing (combined markers: 'preeclampsia, eclampsia or HELLP syndrome': 0.1 (95% CI: -2.0; 2.1) months; hypertension: -0.6 (95% CI: -2.3; 1.1) months; 'unspecific hypertensive disorders': 0.2 (95% CI: -1.9; 2.2) months).
Limitations, Reasons For Caution:
The study is subject to non-differential misclassification of self-reported information on maternal hypertensive disorders in pregnancy and current pubertal status; possibly causing bias toward the null.
Wider Implications Of The Findings:
Hypertensive disorders in pregnancy might accelerate pubertal timing in daughters; however, more studies are needed for causal conclusions.
Study Funding/Competing Interest(S):
The study was funded by the Faculty of Health at Aarhus University. The authors have no financial relationships or competing interests to disclose.
Trial Registration Number:
N/A.
Related Concept Videos
Hypertension and Regulation of Blood Pressure
Factors affecting Blood pressure
Physiological Factors:
Hypertension II: Pathophysiology
Hypertension I: Introduction
Signs of Puberty
Hypertension III: Clinical Manifestations and Diagnostic Studies

