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Early life risk factors for obesity in childhood: cohort study

John J Reilly1, Julie Armstrong, Ahmad R Dorosty

  • 1University of Glasgow Division of Developmental Medicine, Yorkhill Hospitals, Glasgow G3 8SJ. jjr2y@clinmed.gla.ac.uk

BMJ (Clinical Research Ed.)
|May 24, 2005
PubMed

Insights

Early life factors like parental obesity and TV time significantly increase childhood obesity risk. Identifying these eight key risk factors can inform early intervention strategies for better child health outcomes.

Area of Science:

  • Pediatric Health
  • Obesity Research
  • Public Health

Background:

  • Childhood obesity is a significant public health concern with complex developmental origins.
  • Early identification of risk factors is crucial for effective prevention and intervention strategies.

Purpose of the Study:

  • To investigate early life risk factors (up to age 3) associated with childhood obesity in the United Kingdom.
  • To identify specific predictors of obesity at age 7 years.

Main Methods:

  • Prospective cohort study utilizing data from the Avon Longitudinal Study of Parents and Children (ALSPAC).
  • Included 8234 children at age 7, with a subsample of 909 children having detailed early growth data.
  • Obesity defined as body mass index (BMI) ≥ 95th percentile for UK reference data (1990).

Main Results:

  • Eight of 25 putative risk factors were significantly associated with childhood obesity.
  • Key factors included parental obesity, early adiposity rebound, high television viewing, catch-up growth, and specific weight gain patterns.
  • Higher birth weight, elevated weight SDS at 8 and 18 months, and shorter sleep duration (<10.5 hours) at age 3 were also significant predictors.

Conclusions:

  • Several early life factors are strongly associated with an increased risk of developing obesity in childhood.
  • These findings highlight critical periods and factors for targeted obesity prevention programs.
Abstract

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