For years, menopause has been seen as a single biological event, triggered when the ovaries stop working. Women who have gone through it know it affects much more than that, with changes that spread across physical and mental health.
New research reveals that menopause acts as a turning point for the entire reproductive system. Some organs begin changing years before menopause, while others shift suddenly around the time it occurs.
Using AI to map the female reproductive system
Researchers in Barcelona set out to map how the whole female reproductive system ages, not just the ovaries. They analyzed more than 1,100 tissue images from 304 women aged 20 to 70.
The team used AI and deep learning to examine seven reproductive organs: the uterus, ovary, vagina, cervix, breast, and fallopian tubes. They tracked visible tissue changes and molecular aging processes, including the expression of thousands of genes.
This is the first large-scale map of female reproductive system aging. The findings challenge the traditional view of menopause.
Marta Melé, director of the study and lead researcher at the Barcelona Supercomputing Center, said in a press release that until now menopause was seen as the end of the ovary’s reproductive function. The results show it is a turning point that reorganizes other organs and tissues of the reproductive system, and identify the genes and molecular processes behind these changes.
Organs age on their own timelines
The study found that reproductive organs do not age uniformly or even in a straight line. The ovary and vagina age gradually, starting years before menopause. The uterus, on the other hand, undergoes more abrupt changes that happen around the same time as menopause.
The uterine mucosa and uterine muscle are especially sensitive to menopause-related changes, but they do not respond the same way. This shows that different tissues age at different rates, even within the same organ.
Blood tests could replace biopsies
Beyond mapping tissue changes, the researchers discovered something with major clinical potential: signs of reproductive organ aging can be detected in blood.
After analyzing blood plasma samples from more than 21,000 women, the team identified biomarkers that could allow non-invasive monitoring of reproductive organ health. This means earlier detection of menopause-related risks that were previously only found through biopsies.
This approach fits a growing trend in preventive medicine, where blood tests are increasingly used to find early signs of health changes before symptoms appear.
The takeaway
With life expectancy rising, more women are spending more years in the postmenopausal stage. The World Health Organization reported that women over 50 already made up 26 percent of the world’s population in 2021.
Understanding how the reproductive system ages is important for improving prevention, diagnosis, and treatment of cardiovascular, metabolic, neurodegenerative, and bone diseases linked to menopause, which affect a growing part of the population.
This research lays the groundwork for more precise and equitable medicine in women’s health. It adds to a growing body of work exploring how to support healthy aging at every stage.
The study was published in Nature Aging.
