Menopause doesn’t always end — and other lessons from the data

Most of what women are told about peri/menopause comes from a picture medicine drew decades ago: a couple of rough years, some hot flashes, and then you’re through it.

The research says that’s not at all true, and the data is deep and consistent. Our old thinking, diagnostics, even treatment — it simply doesn’t fit what the science shows about women’s biology. And the gap isn’t just misleading — it’s harmful to many women.

Here are five findings that should change how you understand what’s happening to you, and how that changes your choice of solutions.

1. Some of menopause fades. Not vaginal dryness.

This is the most useful distinction in the whole literature, and almost nobody tells women the news.

Hot flashes and night sweats do settle down for most women. They’re worst around the years of “the change” and ease after menopause.

Vaginal dryness does the opposite. It doesn’t fade. It gets worse.

An Australian study followed 438 women year by year and counted how many reported vaginal dryness at each stage. Before the change began: 3%. Early perimenopause: 4%. Late perimenopause: 21%. One year after the final period: 25%. Three years after: 47%.¹

Let’s repeat that to be clear: nearly half of women suffered vaginal dryness three years after menopause — and the rate was still climbing.

A much larger American study, following 2,435 women for up to 17 years, found the same direction. Among women who reported no dryness at the start, 60% reported it at least once over the years after menopause.²

That study also found something with even wider implications: a woman’s current estrogen level did relate to her dryness — women with higher estrogen were somewhat less likely to develop it — but how much her hormones had fallen over the years predicted nothing at all. Neither did testosterone or DHEAS. What predicted her odds of having vaginal dryness was how far through menopause she was, whether she’d had surgery — and her anxiety.²

The researchers called their own result “somewhat surprising.”

Why this matters: waiting it out is a reasonable strategy for hot flashes and night sweats, but a poor one for vaginal symptoms. Vaginal estrogen and hyaluronic acid suppositories work well for those women and have a much more favorable safety profile than systemic hormones. Many women have avoided vaginal estrogen for 20 years on overblown fears not grounded in research.

2. You were told two years for hot flashes. For many women, they never end.

For decades the standard clinical line was that hot flashes last somewhere between six months and two years, start to finish.

Then researchers followed thousands of women through the whole change, year after year. Among women with frequent hot flashes, the median duration was 7.4 years — and they persisted a median of 4.5 years after the final period.³

But the median hides the real story. For women whose symptoms began before or early in perimenopause, the median ran more than 11.8 years, and persisted more than 9 years past the final period. Median duration was 10.1 years for Black women, 8.9 for Hispanic women, 6.5 for white women, 5.4 for Chinese women and 4.8 for Japanese women³, but the racial disparity is itself a complex of other factors.

And it goes further. In a British study of more than 10,000 postmenopausal women aged 54 to 65 — on average about a decade past menopause — 54% still reported hot flashes or night sweats.⁴ The International Menopause Society puts it at up to 30–40% of women in their 60s and 10–15% in their 70s.⁵

There is even a published study of hot flashes in 85-year-old women. Researchers surveyed every 85-year-old woman in one Swedish city and found 16% still having hot flashes, with almost one in ten moderately to very distressed by them. Only 6.5% were taking hormone therapy, so this wasn’t a drug effect.⁶

Two reasons why this matters. First, it’s further evidence that declining estrogen can’t be the sole cause of symptoms. Second — and more importantly — the old picture of a short, sharp change justified a short course of hormone therapy. Take it for a couple of hard years, taper off, done.

That model was built on a short-meno timeline that may have existed a century ago, but not in our lifetimes. If your symptoms may run 11 years — or 30 — as the data shows, then a short course of HRT was never going to “fix me”. And a long course of HRT post-menopause is the highest-risk. What fits a decades-long condition is to work on the underlying causes.

3. There is no single way women experience peri/menopause — but there are patterns.

When researchers tracked how women’s hot flashes behaved over a median of more than fifteen years, they didn’t find one pattern with variations.

They found four patterns. And not one of them described even a third of women.⁷

• The late starters — 29%. Little happens until the final period, then symptoms rise sharply and ease over the years that follow. This is the textbook version, the one everyone is told to expect. It’s the largest group, and it fits fewer than three women in ten.
• The lucky ones — 27%. Low throughout, with a modest rise around the final period.
• The steady burners — 26%. Symptoms start early and stay high, before the final period and long after.
• The early risers — 18%. Symptoms begin as much as 11 years before the final period, then decline after it arrives.

Read those numbers again. There is no dominant pattern. Nearly half of all women — the early risers and the steady burners together — were having symptoms well before the window anyone told them to expect. And only just over a quarter had an easy time of it.

So what decides which group you’re in?

The researchers asked exactly that. The factors that distinguished the four groups were general health, body weight, smoking, alcohol, education, anxiety, depressive symptoms, symptom sensitivity, race — and hormone patterns among them.

But it’s a mistake to overstate the role of falling estrogen. Hormones are on the list. The researchers put it plainly: estradiol alone — your main form of estrogen — is not the complete explanation for these symptoms. When they repeated the analysis using FSH instead, the hormone patterns barely separated the groups at all.⁷

Then they wrote something unusual for a study of this kind. A woman’s own profile — her health, her hormonal status, her psychosocial situation — can help her predict what course her symptoms will follow. And treatment, they said, can be tailored to the specific factors driving hers.

Your peri/menopause experience isn’t luck and you aren’t helpless. Your experience is shaped by patterns that can be identified and worked on. That’s the argument for knowing your pattern rather than waiting to find out which one you turn out to have — and the researchers made it themselves.

4. Your estrogen level doesn’t reliably predict whether you’re having hot flashes — before, during or after menopause

Three sets of researchers, three different groups of women, one question: does measuring a woman’s estrogen tell you whether she’s having hot flashes?

Still cycling

SWAN researchers had 849 women still having periods collect a urine sample every single morning for a full menstrual cycle, while keeping a daily record of their hot flashes. Then they measured four hormones against it.

Hot flashes didn’t map onto falling estrogen in any simple way. What they tracked with was a variable pattern in LH — one of the brain signals that governs ovulation — and lower progesterone output.⁸

Going through the change

A study of 108 women aged 40 to 59 measured estradiol alongside FSH, AMH and inhibin B, then compared them against who was having hot flashes. FSH and AMH were significantly associated. Estradiol was not — and neither was inhibin B. What else was associated: body weight, ethnicity and education.⁹

Decades past it

Researchers studied 3,167 older postmenopausal women being treated for osteoporosis. Nearly 12% were still having bothersome hot flashes, and three years later more than half of those women still had them.

What other factors were associated with hot flashes? Trouble sleeping, by a wide margin — the strongest single association in the study. Then body weight. Vaginal dryness. Lower HDL, the so-called good cholesterol. FSH. Whether she’d had a hysterectomy or used estrogen before.

Hot flashes did not vary with her estradiol level.¹⁰

Let’s be straight about the other side of the argument. Some studies do find a relationship. When SWAN tracked estrogen and hot flashes together across fifteen years, the two moved together — just not closely enough to account for each other. The researchers’ own words: estradiol alone is not the complete explanation.⁷

In our view these findings don’t really conflict. Falling estrogen makes self-regulation harder for everyone. If your body’s self-regulation was already strained before your estrogen fell, you feel it. If it was resilient, you feel it less. That’s why the same hormonal change produces such different experiences — and why the research keeps finding that estrogen is part of the story and never the whole of it.

Think about what that means for a woman still having hot flashes in her 70s. Her ovarian estrogen production dropped off 25 or 30 years ago. Her estrogen isn’t falling anymore, but her body has never re-established its own regulation. So she’s still having symptoms, and the woman next to her with the same estrogen level isn’t.

You saw the same thing from the other direction in Falling estrogen is a weak explanation: women in their 30s with plenty of estrogen and a long list of symptoms.

5. What predicts who suffers most isn’t hormonal.

In the largest and longest study of its kind, researchers followed more than 3,000 women across sixteen years, tracking dozens of symptoms. They wanted to know what separated the women who struggled most from the women who came through comfortably.

The strongest predictors were body weight, smoking, and financial strain.¹¹

Look at what those three have in common. Not one is a hormone. Each is a marker of something else — how your metabolism is running, how much inflammation you’re carrying, how hard your stress system has been working, and for how long.

These are patterns of dysregulation. That’s what a phenotype is: a pattern in how your body has adapted over decades, which then shapes how peri/menopause affects you.

And the women who struggled most were, for the most part, identifiable before their symptoms began. Their pattern of dysregulation was already there. Most stayed in the same group the whole way through.

How all this data points to BioType™

Put the five findings together and the old picture of menopause collapses.

There is no single way women experience peri/menopause. And no single therapy that helps them.

Menopause isn’t a short rough patch. For many women it runs a decade or more, and some symptoms never resolve on their own. Which course you’re on isn’t set by your age or your estrogen levels — it’s set by patterns already in place before your periods changed. And the factors that predict a hard time are the ones that respond to what you do.

A short course of HRT was designed for a menopause that few women experience today.

The research all points to BioType without naming it.

Hundreds of studies, tens of thousands of women, decades of work, converge on this biology:

• Menopause runs in different patterns
• Falling estrogen doesn’t explain your symptoms or their pattern
• HRT solves a couple of symptoms but doesn’t help 20+ more
• Your pattern took shape decades before as dysregulation

What nobody has done before is put it together into an explanation and a solution that a woman can actually use. The evidence of menopause phenotypes sits in journals, one finding at a time, while she sits in a fifteen-minute appointment being told by her doctor that this is normal at her age.

That’s the gap BioType™ fills. Not new research — the supportive research is already there. It’s the work of organizing it into patterns you can recognize in yourself, prioritize and act on.

To see your pattern, find the real underlying causes of your symptoms, and get good guidance on the changes to make — that’s not going to come from almost any encounter with conventional medicine, for reasons we discuss in Menopause is bad news for most women. It is for their doctors, too.

This is why we developed the BioType™ model. It isn’t a replacement for conventional medical care. It’s what you can use to take back control of your health.

Where to start

Your symptoms show which pattern you carry into peri/menopause — and which changes will actually work for you, for symptom relief and better health.

That’s what the BioType quiz reads. Twenty-seven questions, five minutes.

Find My BioType