Childhood BMI trajectories and hypertension in adulthood: a population-based cohort study

Abstract

Higher body mass index (BMI) in childhood is associated with hypertension (HTN) especially in young adulthood. We examined whether longitudinal patterns of BMI development in childhood are associated with HTN across adult ages. We included 124 670 children (51% boys), born between 1960–1996, from the Copenhagen School Health Records Register with height and weight measurements at ages 6–15 years. Latent class trajectory models were used to identify five sex-specific BMI trajectories: below-average, average, above-average, overweight, and obesity. Individuals were followed from age 25 in national health registers from 1995–2022 for HTN. Cox models were used to estimate sex-specific hazard ratios (HRs) with 95% confidence intervals (CIs) for HTN across childhood BMI trajectories, with adjustment for birth cohort and parental education. Follow-up was split into ages 25–39, 40–49, and 50–62 years. Over a median 18-year follow-up, 5 970 men (9.4%) and 5 712 women (9.3%) developed HTN. Men and women with above-average, overweight, and obesity childhood BMI trajectories had higher hazards of HTN than those with the average trajectory. Associations attenuated with age but remained significant. Compared to men with the average trajectory, the obesity trajectory was associated with a HR = 4.31 (95% CI: 3.45–5.37) at ages 25–39 and HR = 2.12 (1.63–2.76) at ages 50–62 years. Compared to women with the average trajectory, the obesity trajectory was associated with a HR = 3.53 (2.89–4.30) at ages 25–39 and HR = 2.19 (1.70–2.82) at ages 50–62 years. Childhood BMI trajectories are positively associated with adult HTN in a dose−response manner highlighting the potential value of early obesity prevention.

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BibTeX RIS

BibTeX

@article{searle2026childhood,
  title = {{Childhood BMI trajectories and hypertension in adulthood: a population-based cohort study}},
  author = {Dominique Searle and Elisabeth Wreford Andersen and Julie Aarestrup and Jennifer L. Baker},
  journal = {Journal of Human Hypertension},
  year = {2026},
  month = sep,
  doi = {10.1038/s41371-026-01219-5},
  url = {https://doi.org/10.1038/s41371-026-01219-5},
  note = {CC BY 4.0},
}

RIS

TY  - JOUR
TI  - Childhood BMI trajectories and hypertension in adulthood: a population-based cohort study
AU  - Dominique Searle
AU  - Elisabeth Wreford Andersen
AU  - Julie Aarestrup
AU  - Jennifer L. Baker
PY  - 2026
DA  - 2026/09/04
JO  - Journal of Human Hypertension
DO  - 10.1038/s41371-026-01219-5
UR  - https://doi.org/10.1038/s41371-026-01219-5
AB  - Higher body mass index (BMI) in childhood is associated with hypertension (HTN) especially in young adulthood. We examined whether longitudinal patterns of BMI development in childhood are associated with HTN across adult ages. We included 124 670 children (51% boys), born between 1960–1996, from the Copenhagen School Health Records Register with height and weight measurements at ages 6–15 years. Latent class trajectory models were used to identify five sex-specific BMI trajectories: below-average, average, above-average, overweight, and obesity. Individuals were followed from age 25 in national health registers from 1995–2022 for HTN. Cox models were used to estimate sex-specific hazard ratios (HRs) with 95% confidence intervals (CIs) for HTN across childhood BMI trajectories, with adjustment for birth cohort and parental education. Follow-up was split into ages 25–39, 40–49, and 50–62 years. Over a median 18-year follow-up, 5 970 men (9.4%) and 5 712 women (9.3%) developed HTN. Men and women with above-average, overweight, and obesity childhood BMI trajectories had higher hazards of HTN than those with the average trajectory. Associations attenuated with age but remained significant. Compared to men with the average trajectory, the obesity trajectory was associated with a HR = 4.31 (95% CI: 3.45–5.37) at ages 25–39 and HR = 2.12 (1.63–2.76) at ages 50–62 years. Compared to women with the average trajectory, the obesity trajectory was associated with a HR = 3.53 (2.89–4.30) at ages 25–39 and HR = 2.19 (1.70–2.82) at ages 50–62 years. Childhood BMI trajectories are positively associated with adult HTN in a dose−response manner highlighting the potential value of early obesity prevention.
SN  - 0950-9240
SN  - 1476-5527
ER  -

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