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Weight and age at menarche.

O Stark1, C S Peckham, C Moynihan

  • 1Institute of Child Health, University of London.

Archives of Disease in Childhood
|March 1, 1989
PubMed
Summary
This summary is machine-generated.

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Body weight and height showed little influence on the timing of puberty (menarche) in girls. Genetics appear to be the primary factor regulating the relationship between body size and menarche in well-nourished populations.

Area of Science:

  • Pediatrics
  • Human Biology
  • Reproductive Health

Background:

  • The timing of menarche, a key indicator of sexual maturation, is influenced by various factors including nutrition and body composition.
  • Understanding these influences is crucial for assessing normal development and potential health risks.

Purpose of the Study:

  • To investigate the relationship between body size (weight and height) and the age at menarche in a large cohort of girls.
  • To determine the extent to which nutritional status and body composition predict the timing of sexual maturation.

Main Methods:

  • Analysis of data from the National Child Development Study (1958 cohort) including 4427 girls.
  • Measurements of weight and height at ages 7, 11, and 16 years, alongside age at menarche.
  • Statistical analysis to assess the correlation between relative weight and age at menarche.

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Main Results:

  • Social class did not influence the distribution of age at menarche.
  • Relative weight at ages 7 and 11 years explained a small percentage (3.2% and 4.9%) of the variation in age at menarche.
  • Girls with earlier menarche were more likely to be overweight at ages 7, 11, and 16, but early menarche also occurred in underweight and average-weight girls.

Conclusions:

  • Body size and weight adjusted for height play a minor role in the timing of sexual maturation in girls.
  • Findings suggest that in well-nourished populations, genetic factors are the primary regulators of the relationship between body size and menarche.
  • Nutrition appears to be less critical than genetic predisposition in this relationship.