When Francesca Duncan began her research on postmenopausal ovaries, she expected to find little activity, akin to an egg factory past its prime. Instead, she discovered that these ovaries were anything but inactive, showing significant molecular changes across decades.

The discovery challenges the traditional view of ovaries, now seen as dynamic organs beyond their reproductive years, impacting overall health and aging. These findings suggest that changes after menopause could be beneficial, protective or both, but the specifics remain a mystery.

Historically, ovaries were dismissed post-menopause, often removed during hysterectomies. However, recent evidence shows that removing healthy ovaries can lead to increased risks of dementia and cardiovascular disease. This highlights the need for a more nuanced understanding of the post-menopausal ovary's role.

The post-menopausal ovary continues to produce hormones, such as testosterone and small amounts of estrogen, though their clinical significance is debated. Low levels of estrogen may even affect memory function, though the exact contributions are unclear. Research suggests that the brain may adapt to declining estrogen levels, possibly influenced by ovarian signaling.

The importance of the post-menopausal ovary may change over time, becoming more prone to age-related diseases like ovarian cancer. This raises questions about the advisability of removing healthy ovaries, even post-menopause, with some experts suggesting caution.