New research shows that menopause is not just a single event when the ovaries stop working. Instead, it acts as a turning point that affects the entire female reproductive system. Some organs begin changing years before menopause, while others shift more abruptly around the time of menopause.
Using AI to map the female reproductive system
Researchers in Barcelona used artificial intelligence to map how the female reproductive system ages. They analyzed more than 1,100 tissue images from 304 women aged 20 to 70. The team examined seven organs: the uterus, ovary, vagina, cervix, breast, and fallopian tubes. They tracked visible tissue changes and the molecular processes linked to aging in each organ, including the expression of thousands of genes.
The study is the first large-scale map of female reproductive system aging. The findings challenge how scientists have traditionally understood menopause.
“Until now, we tended to consider menopause the end of the ovary’s reproductive function,” said Marta Melé, the study’s director and a lead researcher at the Barcelona Supercomputing Center, in a press release. “However, our results show that it acts as a turning point that profoundly reorganizes other organs and tissues of the reproductive system, and allow us to identify the genes and molecular processes that could be behind these changes.”
Your organs age on their own timelines
The researchers found that reproductive organs do not age uniformly or even linearly. The ovary and vagina age progressively, starting years before menopause. The uterus, on the other hand, experiences more abrupt changes that happen on a similar timeline to menopause itself. The uterine mucosa and uterine muscle are especially sensitive to menopause-related changes, but they do not respond identically. This shows that different tissues age at different rates, even within a single organ.
Blood tests could replace biopsies
Beyond mapping tissue changes, the team discovered something with clinical potential: signals of reproductive organ aging can be detected in blood. After analyzing blood plasma samples from more than 21,000 women, they identified biomarkers that could allow for non-invasive monitoring of reproductive organ health. This could mean earlier detection of menopause-related risks that were previously only identifiable through biopsies.
This approach follows a growing trend in preventive medicine, where blood tests are used to detect early signs of health changes before symptoms appear.
The takeaway
With life expectancy increasing, more women are spending more years in the postmenopausal stage. According to the World Health Organization, women over 50 already made up 26% 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 associated with menopause that affect a growing part of the population.
This research lays the groundwork for more precise medicine in women’s health and adds to a growing body of work exploring how to support healthy aging at every stage.
