Many women are left picturing the quiet ovaries have finished its job and gone silent. New research says that picture is wrong.
Scientists at Northwestern University and the Buck Institute for Research on Aging examined ovarian tissue from 28 postmenopausal women aged 50 to 75.
Their analysis, newly published in Aging Cell, found the organ keeps changing well into old age.
Inflammation rose with age. The structure of the tissue shifted. Protein patterns moved in ways the team could measure clearly. In other words, the ovary was not sitting idle.
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Biologically active
The researchers mapped 5,812 protein groups in healthy ovarian tissue. They sorted the women by age. Some were in their 50s, some in their 60s, and the oldest were 70 and above.
The sharpest differences showed up between women in their 50s and those 70 and older.
Younger postmenopausal ovaries carried more proteins that keep cells and tissue structure intact. Older ones carried more proteins tied to inflammation and immune activity.
That shift fits with a growing idea in reproductive biology. The post-reproductive ovary may act less like a dormant gland and more like an immune organ, still signaling to other parts of the body.
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A molecular link to ovarian cancer
Some proteins already tied to ovarian cancer in earlier research became more plentiful in the aging ovaries, particularly in women in their 60s. None of the samples were cancerous or precancerous.
But the pattern raised an uncomfortable question. The team notes that an inflammatory, fibrotic environment is the kind of setting in which cancer cells tend to thrive. Ovarian cancer rates also climb sharply after menopause.
Why this reframes women's health research
Menopause has long been linked to rising risks of heart disease, bone loss, and shifts in brain function.
If the ovary keeps changing its protein output across the decades, it may be sending signals that reach systems far beyond reproduction.
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Francesca Duncan, associate professor of obstetrics and gynecology at Northwestern University Feinberg School of Medicine, has made that argument central to her work.
"I'm obsessed with this concept that the post-reproductive ovary is not defunct," she said in Northwestern University's coverage of her lab's work. Her team is now exploring ways to protect ovarian tissue rather than treat the organ as expendable.
The researchers do not recommend any change in medical care yet. They say it is still unclear whether these ongoing changes help or harm women's long-term health.
Whether healthy ovaries should ever be surgically removed is a question they want future studies to answer.
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This article is made and published by Ida-Marie Palm Varbæk, who may have used AI in the preparation.