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Nearly half of women don't recognize perimenopause symptoms — what's driving this awareness crisis

July 16, 2026 · 11 min

Hugo Vance & Lila Soto

Nearly 42% of women aged 40–44 cannot identify what reproductive stage they are in, according to a Flo Health and Mayo Clinic study of 7,640 women published in the journal Menopause. Perimenopause symptoms — mood swings, cognitive fog, disrupted sleep — are misread as anxiety or depression, leaving a hormonal transition unnamed and untreated for years.

A 2025 mixed-methods study published in Menopause: The Journal of The Menopause Society, conducted by Flo Health in collaboration with the Mayo Clinic's Center for Women's Health and led by Rachel L. Johnson and colleagues, surveyed 7,640 U.S. women aged 35 and older using the Menopause Rating Scale (MRS) and open-ended responses.

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About this episode

Nearly half of women between 40 and 44 can't name the reproductive stage they're currently in. That's the finding from a 7,640-woman study conducted by Flo Health and Mayo Clinic — and this episode uses it as a starting point, not a punchline. Perimenopause is the years-long hormonal transition before menopause, not menopause itself. It typically starts in the mid-40s, runs four to eight years, and produces symptoms — disrupted sleep, mood swings, cognitive fog, word-finding problems — that are clinically indistinguishable from anxiety and depression. Women are 1.5 to 2 times more likely to experience depressive symptoms during this window than at other points in their lives. The misread isn't careless. It's almost structurally guaranteed. The episode digs into where the failure actually lives: 56% of women in the study said they didn't know their symptoms were hormonal at all, and 40% of women who did seek care left with the wrong diagnosis. A JAMA Network Open study adds a harder layer — emotional and cognitive symptoms are three to four times more likely to show up in Reddit menopause forums than in clinical records. The peer infrastructure is doing work the healthcare system isn't. But the episode doesn't let that picture go uncomplicated. A UK study of nearly 14,000 women found only 5.5% of those who self-identified as perimenopausal met clinical diagnostic criteria — which raises real questions about what happens when awareness outruns clinical preparation on both sides of the exam table. About eleven minutes. Worth it.

Frequently asked

Why do so many women not recognize perimenopause symptoms?

Perimenopause symptoms — including mood swings, brain fog, and insomnia — are clinically indistinguishable from anxiety and depression. A Flo Health and Mayo Clinic study of 7,640 women found that 56% of open-ended responses cited symptom confusion as the primary driver of perimenopause uncertainty, meaning women didn't connect their symptoms to anything hormonal.

What percentage of women are misdiagnosed when seeking care for perimenopause symptoms?

Approximately 40% of women who seek medical care for perimenopause symptoms receive a misdiagnosis, typically anxiety or depression. Women entering perimenopause are also one-and-a-half to two times more likely to experience depressive symptoms than at other life stages, making the hormonal misread structurally predictable rather than exceptional.

When does perimenopause start and how long does it last?

Perimenopause typically begins in the mid-40s and lasts four to eight years. It is the hormonal transition before menopause — characterized by fluctuating estrogen, disrupted sleep, mood changes, and cognitive fog. Menopause itself is defined as one full year without a menstrual period; perimenopause is everything leading up to that point.

Are women discussing perimenopause symptoms online more than with doctors?

A July 2026 study by Yulin Hswen at the University of Maryland, published in JAMA Network Open, found that emotional and cognitive perimenopause symptoms appear three to four times more often in Reddit menopause forums than in clinical records — suggesting the clinical encounter routinely fails to capture symptoms that women are actively describing in peer communities.

How many women feel unprepared for perimenopause?

The 2025 State of Menopause survey found that 71% of women aged 40 to 49 felt unprepared for the disruption of perimenopause, and 59% in that age group had no knowledge of what perimenopause was before their symptoms began. The awareness gap precedes the clinical gap — women often lack a framework before they ever see a doctor.

Grounded in 8 sources
P-733 Discrepancies between self-perceived and diagnosed cases of perimenopause - analysis of health data from 13,932 UK-based women · doi.org
Perimenopause symptoms, severity, and healthcare seeking in women in the US | npj Women's Health · nature.com
"High-T Department": Hegseth approves testosterone screening in military - BBC · bbc.com
What doctors know about menopause that most women aren't told · creators.yahoo.com
Reddit posts reveal silent symptoms of menopause · medicalxpress.com
Menopause · who.int
Many women still confused about perimenopause | EurekAlert! · eurekalert.org
New Flo and Mayo Clinic Research Finds Widespread Confusion About Perimenopause Onset | Femtech Insider · femtechinsider.com
Read transcript

Lila Soto: Hugo, hey — can I start somewhere uncomfortable? Like, before we even say what this episode is about?

Hugo Vance: Go on.

Lila Soto: It's Sunday night. She's 43. Third hour of not sleeping — and I mean properly awake, brain cycling. She runs the whole list: coffee after noon, the thing she said in the meeting, maybe anxiety, maybe perimenopause — wait, no, that's menopause, she's not there yet. And she moves on. She does not know she's already in it.

Hugo Vance: That's the whole problem in a single moment, isn't it.

Lila Soto: It is. Because here's the one sentence: perimenopause is the years-long transition before menopause — the body changing the hormonal rules — not the destination, the road. Fluctuating estrogen, disrupted sleep, mood swings, cognitive fog, and it typically starts in the mid-40s and runs four to eight years. Menopause is the finish line, one full year with no period. Perimenopause is everything before that line exists.

Hugo Vance: And she's sitting in year two of it, calling it stress.

Lila Soto: Calling it stress. The Flo Health and Mayo Clinic study — 7,640 women, published in the journal Menopause — found that 42% of women aged 40 to 44 couldn't even name what reproductive stage they were in. That's not a rounding error. That's nearly half the cohort with no map.

Hugo Vance: And the 2025 State of Menopause survey puts 71% of women 40 to 49 feeling unprepared for the disruption. Not for the word — for the actual experience of it.

Lila Soto: Yeah — and that gap between the experience and the framework is kind of the whole question we're trying to open up today.

Hugo Vance: That framework void is doing something very specific, though — it's not just that she lacks a word. It's that she's got the wrong word. She walks into her doctor's office and she says, 'I've been having mood swings, I'm exhausted, I can't concentrate.' And her doctor hears anxiety. Maybe depression. Because those symptoms are — well, clinically, they're indistinguishable. Perimenopause symptoms mirror anxiety and depression so precisely that you need something like the Menopause Rating Scale just to begin separating them out.

Lila Soto: So the symptoms aren't subtle. They're just wearing someone else's name.

Hugo Vance: Exactly that. And Rachel L. Johnson — she led the study in the journal Menopause, co-conducted by Flo Health and Mayo Clinic Center for Women's Health, 7,640 women — she found that symptom confusion and attribution was the single largest driver of perimenopause uncertainty. Fifty-six percent of open-ended responses. More than half. Not 'I didn't know the term.' 'I didn't know these symptoms were connected to anything hormonal at all.'

Lila Soto: Fifty-six percent. That's — yeah, that's not noise.

Hugo Vance: No. And the mechanism underneath it — this is the part that I keep turning over — women are actually one-and-a-half to two times more likely to experience depressive symptoms during perimenopause than at other life stages. So you have a hormonal event that is, by its nature, producing symptoms that look psychiatric. The misread is almost structurally guaranteed.

Lila Soto: Oh, that's grim. Because then she gets treated for the wrong thing.

Hugo Vance: Treated for anxiety, yes. And the underlying hormonal transition continues unmarked. The 2025 State of Menopause survey found 59% of women aged 40 to 49 didn't know what perimenopause was before symptoms started — I mean, that's not coincidence sitting alongside the 56% attribution figure. Those two numbers are pointing at the same gap from opposite ends.

Lila Soto: And I keep wondering — what's underneath that? Like, is it that she didn't know to look, or that she trusted the doctor would tell her, and then nobody did?

Hugo Vance: I think that's — well, that's the harder question. Because it locates the failure. And the 40% misdiagnosis rate among women seeking care for perimenopause symptoms suggests it isn't landing at the provider either. The symptom attribution error isn't just the patient's. It's inside the consultation room.

Lila Soto: And that's the part that breaks the 'health literacy gap' framing for me — because if she went to the doctor, she did her part. She showed up. And 40% of those women still left with the wrong diagnosis. That's not a patient education problem wearing a clinical mask.

Hugo Vance: Wait — so the gap isn't just on her side of the table.

Lila Soto: It's not. And Yulin Hswen at the University of Maryland — the study came out July 15th, 2026, published in JAMA Network Open — found that emotional and cognitive symptoms are three to four times more likely to show up in Reddit menopause forums than in clinical records. Three to four times. Which means — I mean, women are talking. They're describing these things somewhere. The clinical encounter just isn't capturing it.

Hugo Vance: Three to four times. That's not selection bias. That's a structural exclusion.

Lila Soto: Right — but here's what gets me. Picture a clinician, Thursday afternoon, patient describes six weeks of what she calls 'word-finding problems' and crying in her car. The clinician documents 'anxiety, possible depression.' Full stop. The hormonal framing never enters the note. Not because she's hiding anything — because her training gave her no other box to put it in.

Hugo Vance: You see, that's where I'd push on the word 'failure.' It may be less negligence and more — well, the field itself hadn't generated the evidence base that would have changed the curriculum. You can't teach what the research hadn't yet clearly established. That's an evidence problem stacked on top of a prioritization problem.

Lila Soto: Okay, yeah — but calling it a health literacy gap hands the burden back to women. And that framing is doing real damage when 40% of women seeking care are leaving misdiagnosed. The Menopause Society, The Menopause Rating Scale, JAMA — that infrastructure exists. The question is whether clinicians are using it.

Hugo Vance: No, that's — that's a fair correction. The instrument exists. The gap is in deployment.

Lila Soto: And the place where this gets genuinely stranger — we'll get into it — is that Reddit forums are now functioning as the infrastructure filling that void, but that same shift is creating its own mess the clinical system still can't sort out.

Hugo Vance: And that mess is where it gets genuinely two-sided. Because Yulin Hswen's work — the JAMA Network Open study — yes, it shows Reddit surfaces what clinicians miss. But a UK study, 13,932 women, found that only 5.5% of women who self-reported suspected perimenopause actually met NICE diagnostic criteria. Five point five. Which means the awareness wave is also producing something clinical that cannot resolve.

Lila Soto: Wait — 5.5%? Out of nearly fourteen thousand?

Hugo Vance: Out of nearly fourteen thousand. And I think — well, the honest read of that is uncomfortable. It doesn't mean those women weren't suffering. It means the peer-driven language may be giving real distress a name it technically doesn't fit.

Lila Soto: But isn't that the system's fault again? If no trained clinician ever walked her through what perimenopause actually looks like from the inside — mood disruption, cognitive fog, not necessarily cycle changes yet — then she Googled her way to a word, and now we're blaming her for finding it.

Hugo Vance: I don't disagree with the cause. I'm cautious about the consequence — which is that Reddit is now, functionally, the medical record for two million American women a year entering this transition. That's the actual infrastructure. A forum thread.

Lila Soto: And then — in the same news cycle, Pete Hegseth announced mandatory annual testosterone deficiency screening for U.S. military personnel aged 30-plus. He literally called it the 'High-T Department.' A federal mandate. For men. While two million women a year enter perimenopause with no institutional equivalent — nothing.

Hugo Vance: That is not an accident of timing.

Lila Soto: No. It's a policy choice wearing the face of a news cycle. And what it reveals is — I mean, the silence around perimenopause isn't neutral. It's gendered. The hormonal health of one group gets a mandate; the other gets a Reddit thread with 8,000 upvotes.

Hugo Vance: You see, thirty years ago that asymmetry would have been invisible — just the water the field swam in. Now it's visible precisely because the peer infrastructure made it visible. Which is the one genuinely generative thing the forums did. They made the absence legible.

Lila Soto: And that's what keeps happening. She's 43. It's midnight now, not Sunday — maybe it's months later. She typed 'brain fog 40s' and found the thread. She has the word. She finally has the word. And then she calls her doctor.

Hugo Vance: And that's when it gets hard again.

Lila Soto: Because the word traveled faster than the training did. The awareness is real — Rachel L. Johnson's study, the Menopause Society, Yulin Hswen's Reddit data — all of it moved the cultural needle. Clinician preparation, I mean, that's glacial by comparison. So the next gap isn't women not knowing the word. It's women who know the word walking into a room where the doctor still doesn't.

Hugo Vance: Yes. The asymmetry just — shifts. Doesn't close.

Lila Soto: She came in with the answer. That's the thing. She did the work the system never did. I don't know — I find that both kind of hopeful and genuinely sad. Thanks for sitting in it with me.