The onset of menstruation, scientifically termed menarche, is a pivotal biological milestone in a woman’s life. While it marks the transition into reproductive capability, its timing—whether early, typical, or late—has been linked to an array of health outcomes. Recent findings presented at the ENDO 2025 conference in San Francisco bring to light the potential long-term health risks associated with the age of menarche, emphasizing its role as a marker for cardiometabolic and reproductive health.
Scientific and Clinical Evidence: What the Data Tell Us
The findings stem from the Brazilian Longitudinal Study of Adult Health, involving 7,623 women aged 35 to 74 years. This extensive study categorized menarche as early (under 10 years), typical (10–15 years), or late (over 15 years) and explored the associated health outcomes. The results demonstrated that early menarche significantly increased the odds of multiple health conditions, including obesity (OR: 2.18), hypertension (OR: 1.38), and type 2 diabetes (OR: 1.85). Late menarche, while associated with some protective effects against obesity, also correlated with increased risks of menstrual irregularities and certain cardiovascular complications, such as myocardial revascularization.
