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Body mass index trajectories from birth to adolescence and associated factors in the PARIS cohort

Léa Lefebvre1,2, Riem Nur1, Thomas Grunemwald3

  • 1Université Paris Cité, Sorbonne Paris-Nord, INRAe, INSERM, UMR 1153-CRESS, HERA Team, Paris, France.

Acta Paediatrica (Oslo, Norway : 1992)
|January 18, 2025
PubMed

Insights

Five childhood body mass index (BMI) trajectories were identified. High BMI trajectories are linked to parental weight, early rebound, TV watching, and stress, highlighting the need for interventions against childhood overweight.

Area of Science:

  • Pediatric endocrinology
  • Public health
  • Developmental pediatrics

Background:

  • Childhood overweight is a significant public health issue.
  • Understanding body mass index (BMI) trajectories from birth to adolescence is crucial for intervention.
  • The Pollution and Asthma Risk: an Infant Study (PARIS) birth cohort provides longitudinal data.

Purpose of the Study:

  • To identify distinct BMI z-score (BMIz) trajectories from birth to adolescence.
  • To examine factors associated with different BMIz trajectories in a birth cohort.
  • To inform strategies for preventing and managing childhood overweight.

Main Methods:

  • Group-based trajectory modeling was used to identify BMIz trajectories.
  • Data included anthropometric measurements, birth parameters, lifestyle factors, and parental stress.
  • Multivariable multinomial logistic regression models were employed to identify associated factors.

Main Results:

  • Five distinct BMIz trajectories were identified in 540 adolescents.
  • One trajectory characterized early and sustained high BMI (overweight).
  • High BMI trajectories were associated with parental overweight status, early BMI rebound, increased screen time, and early life stress.

Conclusions:

  • Childhood BMI trajectories are diverse, with a significant proportion experiencing early overweight.
  • Modifiable factors, including lifestyle and stress, are associated with high BMI trajectories.
  • Multifactorial interventions targeting modifiable risk factors are essential to combat the childhood overweight epidemic.
Abstract

Keywords:
adolescentlifestylelongitudinal studyoverweightstress

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