Your Ovaries Didn’t Get the Memo That They’re “Retired”
I’m very psyched to write this sentence:
A new study just found that the post-menopausal ovary is not just sitting around doing nothing – it has a whole second career.
For years, the dominant medical narrative around post-menopausal ovaries has been some version of "well, you’re not really using them anymore anyway, might as well take them out while we're in there." I've heard it from clients word for word. Hell, I heard it myself from my own doctor.
Prophylactic oophorectomy — removing perfectly healthy ovaries during a hysterectomy, purely because they're "not needed anymore" — has been common practice for decades, often with zero disease present. Two birds, one surgery, and a woman leaves the OR with three fewer organs than she walked in with, on the theory that it was basically inert tissue anyway.
A new paper out of Northwestern says: Um, not so fast.
Of Mice and Menopause
First off, this is a murine (aka mouse) study, and I'm going to keep reminding you of that, because it matters. Mice are not menopausal women. Neither their reproductive timelines, their hormone dynamics, nor their fifteen-month lifespans compressed into what stands in for "old age" directly tracks with the human body. Anything you read here that sounds like a headline about your ovary needs an asterisk the size of a corpus luteum. What this study gives us is a very good hypothesis-generating place to start, and lots more questions for future research.
That said, it’s pretty interesting.
We already know that ovaries get stiffer, more fibrotic, and more collagen-dense with age; that’s true in both mice and humans. But in previous studies, the research was done on mice who were still reproductively active, just … older. Nobody had really gone in to study what the ovary is doing after ovulation has completely ceased and follicles are gone. This paper looked at what goes on when the ovarian lights have all gone off (so to speak).
Your Menopausal Ovaries Have a Side Gig
When the researchers did the RNA sequencing of post-reproductive (mouse) ovaries, the genes that define reproductive identity – you know, egg cells, hormone-producing follicle cells, and cholesterol biosynthesis – were basically silent and/or undetectable. Which is what you’d expect from an organ that’s stopped ovulating.
What was unexpected was that genes tied to immune function – those that code for inflammation and immune cell signaling and lymphoid tissue – were turned way up. The ovary wasn’t dormant per se – it had, functionally, become a different kind of organ. The researchers describe it as a shift from reproductive activity to immune-like activity.
Also – this paper theorizes that some of this might not be immune cells simply moving in and setting up shop. It might be the ovary’s own cells, under the stresses of senescence (the fancy word for biological aging), starting to lose their original identity and drift toward an immune-like function instead.
Also, Your Cholesterol Feels Validated
So, remember how I shared that some of the genes that got turned down in the post-reproductive ovary were the ones involved in cell metabolism and cholesterol biosynthesis?
I don’t need a mouse study to tell me post-menopausal women’s cholesterol markers shift. I watch it happen in my practice all the time. LDL tends to creep up, body composition redistributes toward the midsection, and clients who ate and moved exactly the same way for twenty years suddenly have lab numbers that don’t seem to match their lifestyle. We’ve always attributed a chunk of that to estrogen’s role in lipid metabolism – and that’s still true. But seeing it show up at the ovarian tissue level, in the actual gene expression, is confirmation that this isn’t a mystery or some kind of personal failing. It’s a documented shift at a deeper level.
It’s also why I don’t hand post-menopausal clients the same kind of recommendations I’d have given them at age 35. The metabolic terrain has literally changed beneath them.
So. Cleanup Crew or Crime Scene?
I think there’s more nuance here than “the ovary gets inflamed and that’s bad” – so don’t panic. There’s already an established body of evidence from large outcomes studies for keeping healthy ovaries intact – prophylactic oophorectomy, even without HRT, has been associated with increased long-term risks of cardiovascular disease, cognitive decline, and all-cause mortality.
One theory is that the immune activity of senescent cells (damaged, but still metabolically active) might be doing some surveillance-type work – sending inflammatory signals to recruit immune cells, like macrophages and natural killer cells, to find and clear out those damaged cells before they cause more trouble. And since immune-mediated clearance of damaged cells becomes less efficient with age, this could be part of a supportive process.
This research did find that some of the genes turned on in the aging ovary are predicted to code for proteins the ovary actually secretes — meaning they don't stay local. They can leave the ovary and signal to the rest of the body. Among them: immunoglobulins, complement system proteins (both tied to inflammation elsewhere in the body as we age), as well as some markers connected to iron regulation and even cancer cell migration.
Again, none of that is confirmed to be happening in bloodstreams yet — that's explicitly flagged as the next round of research. But the implication is that an ovary that's "done" reproductively might still be an active participant in how the rest of the body ages.
It’s also worth noting that this same Northwestern team has a paper under review studying actual human ovaries removed from postmenopausal women, so we should have additional insights soon (well, soon in science-years). For now, the current position is that the post-reproductive (again, mouse) ovary is doing something immunologically – whether that’s net damaging, net protective, or both (depending on context), is still unknown.
Umm, Aren’t We Here To Talk About Nutrition??
Yeeees … and at the same time, I am not going to tell you kale reverses ovarian fibrosis. Nobody’s diet is out-eating functional genomics. But, if the post-reproductive body is running a higher baseline of inflammatory signaling — which, independent of this one paper, is well established in the literature — then what you eat and how you live is either adding fuel to that fire or helping to keep it manageable.
Some food for thought:
Color on your plate is doing more than you think. Polyphenols and antioxidant compounds — the things that make berries blue, greens green, and turmeric that crazy shade of orange — help offset oxidative stress, which is one of the known drivers behind collagen buildup and tissue stiffening as we age. This isn't about a supplement, necessarily. It's about filling half your plate with color, every day.
Blood sugar swings are inflammatory events. Every glucose spike triggers an inflammatory response. String enough of those together across weeks, months, and decades, and you've built a chronic low-grade fire on top of whatever your biology is already doing. Stable blood sugar — protein and fiber at meals, keeping generally regular mealtimes — is one of the most boring, un-sexy, and truly effective levers available.
Your gut is running a huge chunk of your immune system. This is not a metaphor. A significant portion of immune activity is coordinated through the gut, which means fiber intake, microbiome diversity, and regular digestive function aren't separate conversations from inflammation — they're all connected. If someone's eating the same six beige foods on repeat, their immune system doesn't have the raw material to regulate itself well, post-menopausal or not.
Chronic stress is not a badge of achievement, it's a biochemical event. Cortisol dysregulation drives inflammatory cytokine production. Your nervous system and your immune system are in constant conversation, and if one is dysregulated, the other feels it. This is part of why I don't separate "stress management" from "inflammation management" in my practice — they go hand-in-hand.
None of this is magic. It's the difference between a body doing its aging process on a foundation of chronic deprivation and dysregulation, versus doing that same aging process with some actual support underneath it. That's the whole game, and it's the part that never got a mention in the pamphlet you were handed at your hysterectomy consult.
To Conclude
Inflammation isn’t a post-menopausal inevitability you're powerless against. A lot of what I do with clients — building an anti-inflammatory foundation through food, supporting metabolic and lipid pathways, addressing gut health — happens precisely because the post-menopausal body is running a different internal environment than it used to, and this study is one more data point for why.
And remember: Advocate for yourself in that consult room. Ask questions. Bring research. You're allowed.
Oh, for the record: I'd hand my own post-reproductive ovaries over to a lab in a heartbeat if it meant one less mouse had to live out its whole life in a research facility for this kind of work. No shade to the researchers — this is genuinely well-designed science, and mouse models exist because human ovarian tissue is legit hard to access. I just long for the day when testing on animals is not a thing.
Sources:
Aubrey Converse, Shweta S Dipali, Ian P Schowe, Emmett B Kelly, Shivani S Jambunathan, Sarah R Ocañas, Michael B Stout, Michele T Pritchard, Francesca E Duncan, The post-reproductive ovary shifts from a reproductive to an immune-like organ, Molecular Human Reproduction, Volume 32, Issue 2, 2026, gaag038, https://doi.org/10.1093/molehr/gaag038
Parker, WH, Feskanich, D, Broder MS, et al. Long-term mortality associated with oophorectomy compared with ovarian conservation in the nurses’ health study. Obstet Gynecol. 2013; 121 (4): 709-716. Doi: 10.1097/AOG.0b013e3182864350
About The Author
Stephanie Thompson is a New Orleans-based functional nutrition specialist who specializes in helping people alleviate frustrating (often mysterious) health symptoms with dietary guidance, targeted nutrients, and lifestyle modifications. She digs deep into the biochemical pathways and interconnected organ systems to find the root causes of her clients' issues for specific and sustainable relief!
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