The timing of a woman's first menstruation and menopause is notoriously unpredictable. Yet, two rigorous U.S. studies published in the journal Menopause reveal these milestones significantly influence life expectancy and health outcomes.
Analyzing data from over 16,000 women, researchers found that those who began menstruating after age 12 and reached menopause after 50—equating to about 40 years of fertility—were 55% more likely to live beyond 90. These women also showed better overall health, including lower rates of coronary heart disease, compared to peers with earlier periods and shorter reproductive spans.
A larger study of more than 124,000 women explored estrogen's role in type 2 diabetes. Early menopause before age 46 raised diabetes risk by 25%, while menopause after 55 lowered it to 12%. Shorter reproductive cycles under 30 years correlated with a 37% diabetes risk, versus 23% for cycles over 45 years. Hormonal shifts during menopause likely drive these differences.
These findings add to vital research on longevity and women's health. Future studies promise deeper insights.
