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Determination of Reproductive Competence by Confirming Pubertal Onset and Performing a Fertility Assay in Mice and Rats
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Racial disparities in pubertal development.

Mary Scott Ramnitz1, Maya B Lodish

  • 1National Institutes of Health, Bethesda, MD 20892, USA. ramnitzms@mail.nih.gov

Seminars in Reproductive Medicine
|August 13, 2013
PubMed
Summary
This summary is machine-generated.

Children, especially girls, may be entering puberty earlier. Data indicate racial disparities in pubertal timing, with African American girls experiencing earlier puberty and menarche compared to other groups.

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Area of Science:

  • Pediatrics
  • Endocrinology
  • Public Health

Background:

  • Concerns exist regarding earlier pubertal onset in children, particularly girls.
  • Secular trend analyses of pubertal timing are complicated by study design and methodological variations.
  • Racial influences on pubertal timing were not extensively studied before the 1970s.

Purpose of the Study:

  • To review reported variations in pubertal timing across different racial/ethnic groups.
  • To analyze racial disparities in the onset of puberty and menarche.

Main Methods:

  • Literature review of studies on pubertal timing.
  • Analysis of data concerning racial/ethnic differences in pubertal development.

Main Results:

  • African American girls tend to enter puberty and reach menarche earlier than Caucasian and Hispanic girls.
  • The trend toward earlier puberty appears to be progressing more rapidly in African American girls over the last 25 years.

Conclusions:

  • Racial disparities in pubertal timing are evident, particularly in girls.
  • The underlying mechanisms for these racial differences require further investigation, with potential roles for genetic and/or environmental factors.