Menopause Surprise: Ovaries Take on Immune Duty

Contrary to previous assumptions, women's ovaries take on a new, vital role following menopause. Reproductive biologist Francesca Duncan and her team at Northwestern University Feinberg School of Medicine discovered that ovaries continue to change at a molecular level even after reproductive functions cease.

These post-reproductive ovaries appear to transition into an immune-like inflammatory organ. Studies on mice showed distinct transcriptome profiles in older, post-reproductive ovaries, similar to observations in postmenopausal women. This suggests genes previously associated with reproduction are repurposed.

Duncan's team concluded that these findings challenge the idea of the post-reproductive ovary being inert. Instead, it seems to acquire an immune identity that may influence whole-body aging through endocrine and paracrine signaling.

This discovery offers a potential explanation for why women may experience declining health compared to men as they age, despite living longer. The ovaries might secrete molecules that contribute to chronic inflammation during menopausal years, a period often misunderstood and under-researched.

Duncan expressed concern over the current knowledge gap regarding ovarian biology after menopause, emphasizing the need for further research to better understand and support women's health during this significant life stage.