Synopsis: Climate change, education, and changing socio-economic factors have all contributed to girls across ten Indian states reaching puberty earlier than in the past, according to a new study based on nearly three decades of data. Researchers linked increased humidity to earlier menarche—the first menstrual period—while high temperatures were associated with delayed onset. Social factors were also significant, though notably, disparities by religion, ethnicity, and region were found to have narrowed.

Girls in India are reaching puberty earlier than before, with climate, nutrition, and education shaping when menarche—the first menstrual period—occurs, according to a study based on three decades of data.

Researchers observed that climate, education, urbanisation and socioeconomic deve

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