Perimenopause Hormones: Why the Dutch Test Changes Everything

Why women aged 40–60 sleep badly — and why "that's just normal, deal with it" is wrong

Countless women between 40 and 60 report the same cluster of problems: poor sleep, exhaustion, brain fog, weight gain, and the feeling that their body no longer obeys them. Usually it all gets dismissed as "age" or "stress." In reality, a large share of these symptoms trace back to a slowly shifting hormonal system — perimenopause and menopause. And the key message is this: it is treatable, once you understand precisely what's happening.

In this article we cover what actually happens to hormones during this window, why a single blood test is often misleading, what the so-called Dutch test is, and the logic behind proper hormone replacement. We'll also solve a common puzzle: what to do if you don't tolerate progesterone or don't want hormone therapy at all.

What perimenopause and menopause really are

Picture the hormonal cycle as a wave. In a woman of reproductive age this wave has a high amplitude — hormone levels rise and fall strongly between the follicular phase, ovulation, and the luteal phase. With age this amplitude drops. Crucially: the cycle doesn't vanish even in menopause — it simply becomes much "quieter," lower in amplitude.

This decline can begin as early as the late 30s — roughly from 35–38. That's why many women don't believe it could be hormones: "I'm only 39, surely not menopause already?" Perimenopause can last 10–15 years before true menopause.

Symptoms that never send you to the ER

Perimenopause signs are rarely dramatic. They're insidious precisely because they're easy to blame on something else:

Brain fog — trouble concentrating, "hazy" thinking.
Weight gain and water retention.
Poor focus and concentration.
Mood and emotional swings.
Falling libido and difficulty with arousal.
The hallmark sign — exhaustion on waking, getting up more tired than when you went to bed. This reflects an inverted cortisol–melatonin curve.

One lesser-known but striking symptom is "frozen shoulder" (adhesive capsulitis). It's a painful condition that most often hits women around 42–54: it hurts to lie on that shoulder, it's hard to raise the arm overhead, the range is restricted, and a sudden movement (like bending to tie a shoe) can trigger sharp pain. Standard treatment is a cortisone shot, and sometimes manipulation under anesthesia (the shoulder is "freed" while you sleep). Yet this stiffening is often a byproduct of estrogen metabolism — and in many cases symptoms ease dramatically within a few weeks of starting hormone therapy.

Why hormones don't all leave together

Imagine all a woman's hormones gathering in one room and unanimously deciding to leave. Reality isn't that tidy. Estrogen might say "I'll stick around a while," progesterone "I'm out first," pregnenolone "I'll hang on a couple of months then go," and testosterone "I've been gone a long time already." It's this uncoordinated "moving out" that produces the confusing symptom mix.

This explains why many women feel worse on progesterone. If progesterone is still normal in the cycle, adding more can cause bloating and discomfort. Meanwhile the real problem may lie elsewhere — low pregnenolone, a deficiency in one of the estrogens, or (almost always) low testosterone and free testosterone.

An important nuance about libido

During this period even a woman's ability to feel arousal toward her partner can shift. This does not mean she no longer loves or is attracted to them. We often conflate libido and arousal with love and attraction, but they're different things. You can be deeply in love and still have no libido — the usual cause is low free testosterone, not a relationship problem.

Why a single blood test often misleads

One of the most dangerous things in women's hormone care is prescribing an entire hormone complement based on one single blood test. A blood test is only a snapshot in time. For a menstruating woman, estrogen can be perfectly normal whether it's in the 400s or down in the teens — depending on the phase of the cycle.

So a number like "172," "210," "68" or "99" tells you nothing on its own. Without knowing which phase she's in (follicular, ovulation, luteal) and whether hormones are entering or leaving the cycle together, you can't judge high or low. That's exactly why treatment based on a single blood draw so often fails.

The Dutch test: the gold standard for women

The solution is a 24-hour urine test called the Dutch test (DUTCH — Dried Urine Test for Comprehensive Hormones). It's done once, but it shows the entire hormone complement and its metabolites across a full day, rather than one brief moment.

Why this matters:

Shows the whole hormone picture, not one isolated marker.
Reveals that not all hormones drop at once — some may be perfectly normal.
Helps avoid the error of prescribing a hormone you don't actually need (e.g. progesterone when its level is normal).
Shows how the body metabolizes estrogens (E1, E2, E3 — estrone, estradiol, estriol), which matters for safety.

With this data, a gynecologist (ideally a functional-medicine one) can say precisely: "These hormones are too low — I'll bring them back to normal. These I'll leave alone." That's a completely different strategy from blindly firing at one target.

The core principle: restore the whole complement, not one hormone

It's called hormone REPLACEMENT therapy for a reason. The idea isn't to slam in a huge dose of one hormone, but to restore the full complement of deficient hormones to physiological normal. "We don't shoot women with rifles" — meaning you don't throw darts at individual hormones at random.

Why hormones aren't "cumulative"

A great example from male physiology illustrates the principle. Take two men: one with testosterone of 200, one with 600. Both start therapy. Who gets more testosterone? The answer — they get exactly the same amount. Reason: as soon as you start replacement, their own production drops to near zero. So if you give each 200 mg of testosterone, they end up in the same place. Hormones aren't cumulative — what matters is not "how much you add to the existing level" but the final balance.

For men: replace or stimulate?

Although this article focuses on women, the principles intertwine. With age men can develop primary hypogonadism — when the body can no longer make its own testosterone. In that case, replacing testosterone makes sense — the evidence is clear.

But if a man can still produce his own, it's better to stimulate his own production rather than suppress it with external testosterone. Tools for this include:

Peptides — kisspeptin, gonadorelin.
Enclomiphene — signals the testicles to increase their own output.

The bottom line: no external hormone is better than what the body makes itself. The longer external testosterone is used, the less likely the body will quickly "switch back on" once it's stopped.

What the evidence says on men's testosterone

In 2018 the American Urological Association updated its clinical guidelines. Key points:

Low testosterone is a cardiovascular risk factor.
Replacing testosterone does not raise cardiovascular risk — if anything it may lower it.
The male heart has around 10,000 testosterone receptors — the most of any organ.
There's no proven increased risk of prostate cancer or prostate enlargement.

Context: why estrogen was needlessly demonized for so long

For decades roughly 51 million women suffered because it was claimed that hormone therapy (especially estrogen) raised breast cancer risk. This came from a large study — the Women's Health Initiative — whose data were misreported. In reality that study did not show a 20% increase in breast cancer; it showed a 20% relative risk reduction. Recently the FDA removed the "black box" (strictest) warnings from women's hormone therapy.

Important note: the risks and benefits of hormone therapy depend on age, time since menopause onset, personal and family history, and route of administration. It's always an individual decision made with your doctor.

Intermittent fasting: a hidden trap for menstruating women

This is one of the most important practical takeaways. Estrogen's primary role is to retain water in the interstitial space (which is why in pregnancy estrogen can rise from about 400 to around 4,500 — so the body retains water and protects the fetus). When a woman eats in a very narrow feeding window (strict intermittent fasting), the estrogen cycle can be disrupted and the body starts retaining water.

A typical household scene: husband and wife start intermittent fasting in the same narrow window. He's full of energy, building lean muscle, sleeping like a bear, waking like a tiger, thriving in the gym. She, on the same window, can barely get out of bed, starts to bloat — and despite exercising and barely eating, she gains weight. Usually that's not fat, it's water retention from a disrupted estrogen cycle.

Practical conclusion: for menstruating women a very narrow feeding window often harms rather than helps. If you use intermittent fasting, avoid extreme windows, track not just weight but water-retention signs, and don't expect the same results as men.

A practical action plan

Recognize the signs. If you're 38–58 with morning exhaustion, brain fog, water retention, falling libido, or even a "frozen shoulder" — it may be hormones, not just "age."
Don't base treatment on one blood test. A single draw without cycle context misleads.
Request a Dutch (24-hour urine) test. It shows the whole hormone complement and metabolites.
Find a doctor who restores the WHOLE complement. Not one who blindly prescribes progesterone or estrogen, but one who raises only the hormones that are deficient.
If you don't tolerate progesterone — that's a clue its level may be normal and the problem lies elsewhere. Don't blindly increase the dose; test the full picture.
Review your eating window. If you fast in a very narrow window and retain water — widen it.
Men: if you can still make your own testosterone, consider stimulation (enclomiphene, peptides) before outright replacement.

Worked example: a 47-year-old woman

Rima, 47. Her complaints: waking tired, gained 4 kg over six months (with no diet change), a bloated belly, lost libido, and new shoulder pain at night. Her doctor prescribed progesterone — which made the bloating worse. A Dutch test revealed: progesterone was normal (so adding more made things worse), while free testosterone and one estradiol metabolite were low. Restoring only the deficient hormones cleared the shoulder pain, brought back morning energy, and reduced water retention. This illustrates the principle: you need an accurate picture, not a blind protocol.

Common mistakes

Writing symptoms off as "age" or "stress." Perimenopause can start in the late 30s, so many women never even consider hormones.
Treating on one blood test. A snapshot without cycle context misleads.
Blindly increasing progesterone. If it bloats you, its level is probably normal and the problem is elsewhere.
"Firing" at one hormone. You need to restore the whole complement, not throw darts at a single target.
Confusing water retention with fat. Estrogen retains water — weight isn't always fat.
Extreme intermittent fasting for menstruating women. A narrow window can disrupt the estrogen cycle.
For men — jumping straight to replacement testosterone when their own production can still be stimulated.

FAQ

Is HRT actually safe?

The long-standing breast cancer fear was based on misinterpreted data; the FDA removed the strictest warnings. Still, safety depends on age, time since menopause, medical history, and route — it's an individual decision with your doctor.

Why is progesterone given alongside estrogen?

When taking estrogen, progesterone is usually needed to protect the uterine lining from overgrowth (uterine cancer risk). If you tolerate it poorly, discuss alternative forms and doses with your doctor — and first test whether you even need it.

Can I just go and get a Dutch test?

It's available through doctors and some functional-medicine clinics. What matters most is having the results interpreted by someone who can restore the whole hormone complement.

How fast will I feel a change?

Some symptoms (like frozen shoulder) can ease dramatically within a few weeks of appropriate therapy; others (energy, sleep) also improve gradually.

This article is general information and not medical advice. For health problems, hormone testing, and treatment, always consult a qualified professional.

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