Prenatal smoking and age at menarche: influence of the prenatal environment on the timing of puberty
STUDY QUESTION Do prenatal exposure to cigarette smoking and birthweight influence age at menarche (AAM) in a cohort of Australian girls? SUMMARY ANSWER We find that prenatal smoke exposure and lower birthweight increase the chance of earlier menarche in accordance with theoretical predictions as do confounding factors of maternal AAM and higher BMI of the girls. WHAT IS KNOWN ALREADY Much prior research focuses on the role of the early childhood environment in determining AAM but fewer studies...[Show more]
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