What Happens to the Ovaries After Menopause?
Today’s posting covers a little-explored topic in the reproductive medicine field: the post-reproductive ovary. Though many might assume that once a woman reaches menopause, her ovaries are inert, a new paper shows that may not be the case after all. Though the research is still considered preliminary at this point, it’s still exciting to explore the question of what happens to the ovaries when a woman is no longer in her reproductive years — a question that most experts have probably never thought to ask themselves.
The CHR’s Editorial Staff
Almost nothing is as pleasing in reviewing published medical literature than the discovery of a paper that offers a surprising answer to a very obvious question you should have asked yourself a long time ago but never did, - and now, are getting served on a platter, - question and answer all at once. And we recently were privileged to experience exactly such a moment when coming across a so-called Concise Communication by a group of U.S. investigators published in Molecular Human Reproduction, - the medical journal in reproductive medicine with the highest impact factor.1
Here is the story: Building on the obviously by no means new fact that reproductive aging in females is characterized by the irreversible depletion of ovarian follicles, the investigators asked the very obvious question – which, quite amazingly, nobody had asked before in any detail – what happens to the post-reproductive ovary after menopause?
Using paired histological and bulk transcriptomic analyses of ovaries from reproductively young (2 m), reproductively old (18 m), and post-reproductive (24 m) mice, they went to work to figure out the answer in an animal model. They mapped how ovarian identity evolved beyond the period of follicle exhaustion.
Initially, no big surprises: As expected, they observed follicle loss, stromal remodeling, and increased collagen deposition in the reproductively old and post-reproductive cohorts. But then, things got interesting: Transcriptomic analyses revealed with advancing age a shift from reproductive functionality to an immune-dominant signature.
This manifested itself by post-reproductive ovaries demonstrating increased infiltration by T cells, macrophages, and multinucleated giant cells. Ovaries also showed discrete transcriptomic differences, suggesting that they continue to undergo molecular changes after reproductive senescence.
So what may all of this mean?
And here things got even more interesting: Hypothesizing that ovarian aging triggers a systemic aging cascade – it is after all likely the first organ in the body to “age-out” in its principal function – the authors’ cross-references implicated genes with a data base of secreted proteins and the results of this hook-up suggested that the post-reproductive ovary could be a source of pro-inflammatory signaling mediators with the potential to modulate not only intra- but also extra-ovarian tissues.
If confirmed, these findings, of course, would challenge the assumption that the post-reproductive ovary is inert, - instead indicating that it acquires an immune identity with potential endocrine and paracrine influence on whole-body aging. And should this, indeed, be confirmed, - reproductive medicine immediately should make a claim for all of Longevity Medicine (maybe a joke?).
But this is not even the end of the story because, as ESHRE (the society that owns all Human Reproduction journals) in an e-mail to subscribers on June 30, 2026, on behalf of the editors of the journal, noted, - while transcriptomics confirmed the predictable downregulation of cell cycle, meiosis, and cholesterol biosynthesis pathways as a consequence of loss of follicles and steroidogenesis, the unexpected finding was what apparently “takes its place”: genes for innate and adaptive immunity, cytokine production, antigen presentation, and immunoglobulin production, which were all strongly upregulated, accompanied by increased infiltration of immune cells into the ovary, including T-cells, macrophages, and giant cells.
Even more surprisingly, changes in granulosa cell marker distribution – like, for example, FOXL2 - may suggest that somatic ovarian cells may lose their reproductive identity and acquire immune cell-like properties, a pattern of cellular plasticity also observed in other aging tissues.
This paper as of this point must be considered as preliminary (humans, after all, are not mice); but, considering preservation of many important and basic reproductive pathways in humans, it would not surprise if the reported mouse experience would also apply to humans. This identifies the here-discussed paper as an important first step, which, hopefully, will soon be followed up with human experiences.
We, however, at this point want to add one more comment to this discussion. It is actually more of a reminder: ovaries and adrenal glands share a common embryonic primordium. Whatever happens to ovaries with age, therefore, may also affect the adrenal glands (and vice versa). That may be another interesting and untouched area of research that may surprise in its results.
REFERENCE
Converse et al., Mol Hum Reprod 2026;32(2):gaag038