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Updated: May 23, 2026

Assessment of Child Anthropometry in a Large Epidemiologic Study
Published on: February 2, 2017
Birth weight, early weight gain and pubertal maturation: a longitudinal study
1Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC 27709, USA. wangy13@niehs.nih.gov
Insights
Higher birth weight and early childhood weight gain are linked to earlier puberty onset in girls. This study examined these factors
Area of Science:
- Pediatric Endocrinology
- Human Growth and Development
- Reproductive Health
Background:
- Birth weight and early life growth are critical factors influencing child development.
- The timing of puberty is a key indicator of overall health and development.
- Understanding influences on pubertal timing is essential for identifying potential health risks.
Purpose of the Study:
- To investigate the association between birth weight and early weight gain with pubertal timing.
- To examine these relationships separately in girls and boys.
- To determine the impact on menarche and advanced Tanner stages.
Main Methods:
- Longitudinal study of 856 newborns followed to adolescence.
- Collected birth weight data and tracked weight gain in early childhood (0-5 years).
- Assessed age at menarche and advanced Tanner stages using adolescent and parental reports; survival models analyzed data.
Main Results:
- Girls with higher birth weight and greater early weight gains experienced earlier menarche and advanced Tanner stages.
- Boys with greater early weight gains tended toward earlier advanced Tanner stages, though significance varied.
- The association between birth weight and early weight gain with pubertal timing was more pronounced in girls.
Conclusions:
- Higher birth weights and accelerated early childhood weight gain are associated with earlier sexual maturation in girls.
- These findings highlight the importance of early life factors in determining pubertal timing.
- Further research may explore underlying biological mechanisms and long-term health implications.
Objective:
To investigate the effect of birth weight and early weight gain on the timing of various measures of puberty in both girls and boys.
Methods:
A total of 856 newborns enrolled in the North Carolina Infant Feeding Study were followed to age 5 years, with 600 children followed up at adolescence. Birth weight was obtained from medical records and children were weighed at study visits until age 5 years; gains in standardized weights were calculated over four early age intervals: 0-6 months, 6-12 months, 1-2 years and 2-5 years. Age at menarche in girls and age at advanced Tanner stages in both girls and boys were reported by adolescents and their parents. Survival models were used to analyse the effects of birth weight and early weight gain on these outcomes.
Results:
Girls with higher birth weight and greater weight gains during the four early age intervals were younger when they reached menarche and advanced Tanner stages; boys with greater early weight gains also were younger when they reached advanced Tanner stages, but few of these effects were statistically significant.
Conclusions:
Higher birth weights and greater weight gains during infancy and early childhood can lead to earlier sexual maturation in girls.
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