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Life sciences · Review
World Journal of Advanced Research and Reviews · September 23, 2026
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Menarche is an important marker of female reproductive maturation and reflects the cumulative effects of genetic, neuroendocrine, metabolic, nutritional, social and environmental influences. Evidence from India indicates that age at menarche has decreased across successive birth cohorts, although the magnitude of change differs between regions and population groups. This narrative review synthesizes recent Indian and international evidence concerning secular changes in menarcheal timing, determinants of earlier maturation, associated health outcomes and implications for adolescent and community health practice. A recent NFHS-based analysis of 578,790 women reported a weighted mean age at menarche of 13.49 years and a decline from 13.78 years in the oldest birth cohort to 13.34 years in the youngest birth cohort examined. Regional differences remain substantial. Childhood adiposity, growth patterns and nutritional transition appear to be among the most consistent modifiable correlates of earlier menarcheal timing. Socioeconomic and lifestyle changes may contribute through multiple pathways, while evidence concerning endocrine-disrupting chemicals and psychosocial stress remains less consistent. Earlier menarche has been associated with later life obesity, metabolic abnormalities, cardiovascular outcomes and some hormone related cancers, although these relationships are influenced by adiposity and other life course factors. The public health response should therefore emphasize healthy growth, prevention of excessive childhood weight gain, menstrual preparedness, supportive school environments, psychosocial support and surveillance of pubertal timing rather than treating early menarche as an isolated disease condition.