Story perspectives

Puberty Starting Earlier: Causes and New Guidelines Ahead

1/22/2026

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Summary

Story summary

Puberty is starting earlier worldwide, with the average age at menarche dropping from about 16–17 years in the 1840s to about 12 years today.
Rising obesity, exposure to hormone-disrupting chemicals, and psychological stress are linked to this earlier puberty.
The Endocrine Society plans to release guidelines in 2026 to address treatment for early puberty.
The trend has prompted increased referrals for precocious puberty, particularly during the COVID-19 pandemic.

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Story summary

Puberty is starting earlier worldwide, with the average age at menarche dropping from about 16–17 years in the 1840s to about 12 years today.
Rising obesity, exposure to hormone-disrupting chemicals, and psychological stress are linked to this earlier puberty.
The Endocrine Society plans to release guidelines in 2026 to address treatment for early puberty.
The trend has prompted increased referrals for precocious puberty, particularly during the COVID-19 pandemic.