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Perimenopause headaches: why migraine changes in midlife and what helps

Headaches and migraine often get worse in the menopause transition and improve for many women afterwards. Here is why, what HRT and aura mean for you, and which headaches need a doctor first.

A guide to headaches and migraine in perimenopause and after menopause. The NHS lists headaches and migraines that are worse than usual among perimenopause symptoms. In the AMPP study of 3,664 US women with migraine (Martin et al., Headache 2016, via University of Cincinnati), the risk of high-frequency headache (10+ days a month) was 60% higher in perimenopause and 76% higher after menopause than in women with regular cycles. Estrogen swings and broken sleep from night sweats are the main drivers (Migraine Trust; EMAS 2026). A systematic review (Ripa et al., Int J Womens Health 2015) reports improvement in 67% of women after natural menopause and 33% after surgical menopause. Migraine, including with aura, is not a contraindication to HRT; transdermal, continuous, lowest-effective-dose estrogen is preferred (Migraine Trust, EMAS, Australasian Menopause Society), while the combined pill is not advised with aura because stroke risk is about doubled. A 2026 meta-analysis presented at The Menopause Society linked hormone therapy with more frequent, longer attacks (association only). Covers NHS red flags, giant cell arteritis after 50 (Mayo Clinic), medication overuse, tracking steps, doctor questions and Welltory's limits.

Short answer

Yes, perimenopause can cause headaches, and it often makes existing migraine worse. The NHS lists "headaches and migraines that are worse than usual" among the symptoms of perimenopause and menopause (2). In a US study of 3,664 women with migraine, the risk of high-frequency headache (10 or more headache days a month) was about 60% higher in perimenopause than in women with regular cycles (3). The main driver is the uneven rise and fall of estrogen: a drop in estrogen is a common migraine trigger (5), and broken sleep from night sweats adds to it.

The good news: after natural menopause, migraine improves for many women. In one survey summarized in a systematic review, it improved in 67% of women after natural menopause but in only 33% after surgical menopause (4). Migraine, including migraine with aura, does not by itself rule out hormone therapy; patches, gels or sprays are usually preferred (5, 7).

If your headaches got worse in your 40s, you are not imagining it and it is not weakness: this is one of the best-documented changes of the menopause transition.

Note: This article is for education and is not medical advice. A sudden, extremely painful headache, weakness on one side of the body or face, trouble speaking, vision loss or confusion needs emergency care (1). A new, lasting headache after 50, especially with jaw pain or vision changes, needs a doctor right away (10). This guide is published by Welltory, which makes one of the apps mentioned.

If you live with migraine and want to work through this with other women who get it, Welltory runs a paid peer-support program: join Migraine Lab here (what Migraine Lab is, who it is for and what it costs). It is education and peer support, not medical care.

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Can perimenopause cause headaches?

It can, in three ways.

  1. It can make existing migraine worse. This is the most common pattern. The Migraine Trust says: "It's common to have more frequent and severe migraine attacks during perimenopause" (5). The European Menopause and Andropause Society (EMAS) adds that frequency, duration and intensity can all increase (7).

  2. It can start migraine for the first time. Some women with no migraine history get their first attacks in perimenopause (5). A first-ever headache pattern in midlife still deserves a doctor's look, because not every new headache is hormonal (see the red flags below).

  3. It can add other headaches on top. Night sweats, short sleep, stress and anxiety are all part of the transition, and the Migraine Trust notes they "can make you more likely to have a migraine attack" (5). Taking painkillers on more and more days can also lead to medication overuse headache.

The numbers back this up. In the American Migraine Prevalence and Prevention (AMPP) study, researchers compared 3,664 women aged 35 to 65 who had migraine. Compared with women whose cycles were still regular, the risk of high-frequency headache was 60% higher in perimenopause and 76% higher after menopause (3). This was a cross-sectional study, so it shows a link at one point in time, not cause and effect. And it does not contradict the improvement many women see later: the effect of menopause on migraine often takes a few years to settle.

What does a perimenopause headache feel like?

There is no single "perimenopause headache." What people usually describe falls into two patterns.

Migraine that changes its habits. If you have had migraine for years, perimenopause may change the pattern rather than the type of pain. Attacks may come more often, last longer, or stop lining up with your period. Our guide to menstrual migraine explains how the classic pre-period pattern works; in perimenopause, cycles become irregular, so the "predictable week" can disappear. Typical migraine features stay the same: moderate to severe throbbing pain, often on one side, with nausea and sensitivity to light and sound (1).

A dull, pressing headache. Many women describe a band-like or heavy head on days after a bad night or a stressful week. This sounds more like tension-type headache than migraine. If you are not sure which one you have, our guide on whether it's a headache or a migraine walks through the differences.

What helps you tell them apart in practice is a record. Write down for each headache: when it started, how long it lasted, where it hurt, whether light or sound bothered you, whether you felt sick, and what your sleep and cycle were like. After a month, the pattern is usually clearer than your memory of it.

Red flags: when a midlife headache is not hormonal

Most perimenopause headaches are migraine or tension-type headache. But midlife is also when some serious causes of headache become more common, so these signs come first.

Call 911 (or your local emergency number) if you (1):

  • have a headache that came on suddenly and is extremely painful;

  • have problems speaking or remembering things;

  • lose your vision, or have blurred or double vision;

  • feel drowsy or confused;

  • have a seizure;

  • have a very high temperature with symptoms of meningitis;

  • cannot move or have weakness in the arms or legs on one side of the body, or on one side of the face;

  • have recently had a head injury.

Get urgent medical advice the same day if a migraine attack has lasted longer than 72 hours, or aura symptoms last longer than 1 hour at a time (1).

A new headache after 50. If you are over 50 and get a new, lasting headache, most often in the temples, especially with scalp soreness, jaw pain when chewing, fever, tiredness or any change in vision, see a doctor right away. These are signs of giant cell arteritis, an inflammation of blood vessels that mostly affects people over 50 and can threaten vision; starting treatment quickly may help prevent vision loss (10). Sudden, lasting loss of vision in one eye is an emergency.

A change in your aura. If you have migraine with aura and the aura suddenly looks or feels different, lasts much longer than usual, or comes with weakness on one side, do not assume it is "just hormones." Get it checked.

Why headaches get worse in perimenopause

Estrogen goes up and down, not just down

Perimenopause usually starts in the mid-40s and lasts about four years on average, but it can last up to eight (12). During that time, hormone levels "go up and down like a rollercoaster," as Cleveland Clinic puts it (12). For migraine, the swings matter more than the level. A sudden drop in estrogen can trigger migraine (9), and in perimenopause those drops come more often and less predictably. EMAS sums it up: "Migraine may worsen during perimenopause due to fluctuating estrogen levels" (7).

The Australasian Menopause Society adds a detail that explains why some women are hit harder than others: "Migraine without aura is more sensitive to hormonal flux than migraine with aura" (13).

Sleep breaks down

Hot flashes and night sweats wake you up, and short or broken sleep is one of the classic migraine triggers. The Migraine Trust lists hot flushes, night sweats and anxiety as symptoms that "can disrupt your sleep and make you feel stressed," which makes an attack more likely (5). This is why a bad week of sleep often comes before a bad week of headaches.

Life gets heavier at the same time

The 40s and early 50s are often the years of peak load: work, children, aging parents. Stress, skipped meals and irregular days are triggers in their own right. None of this is your fault, but it does mean the brain's threshold is being tested from several directions at once.

Painkillers can start to backfire

When attacks come more often, it is natural to reach for painkillers more often. The Migraine Trust warns that taking acute migraine medicines on more than two days a week raises the risk of medication overuse headache (5). If you are counting more painkiller days than before, that is a reason to talk to your doctor about prevention, not a reason to stop treating attacks on your own.

Work out your early warning signs with women who get it

Welltory Migraine Lab is a paid, moderated online community for women 18 to 65 living with migraine. Opens December 1, 2026. Peer support and education, not medical care.

Perimenopause migraines vs menstrual migraine: what is different

Menstrual migraine is tied to the estrogen drop just before a period. In the reproductive years, that drop comes at a predictable time, so many women can plan around it. In perimenopause, three things change:

​Menstrual migraine (regular cycles)Perimenopause migraines
TimingAround day 1 of the period, predictableCan come at any point; cycles are irregular
Hormone patternOne predictable estrogen drop per cycleBigger, more frequent, unpredictable swings
Other triggersUsually secondaryNight sweats and broken sleep often add up
What tracking showsA clear pre-period windowLinks with sleep, hot flashes and skipped periods

So if your tracking strategy was "count to day 26," it may stop working. You will learn more by noting your bleeding days (however irregular), your sleep and your hot flashes together.

Do migraines stop after menopause?

For many women, they get better. NHS guidance notes that in women, migraine "often gets better after the menopause" (1), and the Migraine Trust says attacks may become less severe and less frequent and "may even disappear altogether," though this can take a few years (5). The National Migraine Centre in the UK puts the wait at two or three years after the last period, while hormones settle (6).

How menopause happens matters. In a systematic review of migraine in menopausal women, one survey found that migraine improved in 67% of women after natural menopause and in 33% after surgical menopause, and worsened in 9% after natural menopause but in 67% after surgical menopause (4). Surgical menopause (removal of the ovaries) causes a sudden drop in hormones rather than a gradual one, which fits the idea that the speed of the change is what triggers attacks. The same review stresses that the studies are few, small and often conflicting, so these percentages are a direction, not a promise (4).

Two practical points follow. First, if you are in the thick of perimenopause, the worst stretch is often temporary. Second, migraine that persists after menopause is not "unusual" or a sign that something is wrong with you; non-hormonal triggers such as sleep, stress and alcohol still apply (6).

HRT and migraines: what the evidence says

Hormone therapy (HRT, also called menopausal hormone therapy or MHT) is, in the words of The Menopause Society's medical director, "the most effective treatment for bothersome vasomotor symptoms" — hot flashes and night sweats (8). How it affects migraine depends on the woman and on the type of HRT.

Migraine is not a reason to rule out HRT. The Australasian Menopause Society states: "Migraine is not a contraindication to using menopausal hormone therapy" (13). The Migraine Trust says the same applies to migraine with aura (5).

Steady beats swinging. Because estrogen drops trigger attacks, specialists favor forms of HRT that keep levels steady:

  • Patches, gels or sprays rather than tablets. The Migraine Trust explains that these "provide more stable hormone levels than tablets" (5). EMAS says transdermal delivery "is less likely to have a negative effect on migraine than oral therapy" (7).

  • Continuous estrogen. EMAS advises that estrogen "should be given continuously to prevent estrogen 'withdrawal' migraine" (7).

  • The lowest dose that controls symptoms (5, 7).

  • A progestogen if you have a uterus. Options mentioned by the Migraine Trust include a combined patch, micronized progesterone or a hormonal IUD (5). The right choice and dose are decisions for you and your prescriber.

HRT can help some women and make migraine worse for others. The Migraine Trust is frank about it: "Some people find that HRT can help with their migraine," while "others find HRT makes their migraine worse" (5). Cleveland Clinic lists hormone replacement therapy among medicines that can make migraine more frequent or severe and advises talking to your provider if headaches worsen after starting it (11). Headache is also a listed common side effect of HRT, and side effects often settle within a few weeks; the NHS suggests giving treatment at least 3 months unless side effects are severe (14).

HRT is not a migraine treatment. The National Migraine Centre is clear: "HRT should not be used as a treatment for migraine." It may reduce attacks indirectly by controlling the hot flashes and night sweats that trigger them (6).

The newest data, in context. In October 2026, researchers presented a meta-analysis of five studies with nearly 24,000 postmenopausal women at The Menopause Society's annual meeting. Hormone therapy was associated with more frequent and longer migraine attacks, but not with more painkiller use or higher severity scores (8). The Society's medical director, Dr. Stephanie Faubion, said hormone therapy "can be used safely in many women with migraine" and that the finding may partly reflect who chooses hormone therapy, adding that more research is needed (8). This is a conference presentation of an association, not proof that HRT causes worse migraine.

Migraine with aura in perimenopause: birth control vs HRT

This is the point that confuses people most, because the advice for contraception and for HRT sounds opposite.

Combined birth control pills. People who have migraine with aura are advised not to take the combined estrogen-containing pill because of an increased risk of stroke (5). EMAS notes that the risk of ischemic stroke is approximately doubled in people with migraine with aura (7). In perimenopause, many women still need contraception, so this matters until your doctor confirms you no longer need it.

HRT. "But it's not the same with HRT," the Migraine Trust explains: HRT uses a different form of estrogen at a much lower dose than the pill, so the stroke risk is much lower (5). EMAS states: "Migraine aura, with or without headache, is not a contraindication to estrogen replacement," and adds that non-oral routes and low doses of natural estrogens are preferred because they have little effect on blood clotting (7).

What to watch for. A small study summarized in the 2015 systematic review found that some women developed aura, or had their aura worsen, after starting estrogen patches; the authors suggest higher doses may be more likely to do this (4). If you notice new aura, more frequent aura or a different kind of aura after starting or changing HRT, tell your prescriber. If aura comes with weakness on one side or trouble speaking, treat it as an emergency.

Because your full picture matters — blood pressure, smoking, clotting history, other medicines — the decision belongs with a clinician who knows you. You can bring this section to the appointment and ask, "Given my aura, what type of contraception and HRT would you suggest, and why?"

Other treatments doctors use for midlife migraine

You do not have to choose between "hormones" and "nothing." EMAS lists options doctors use for migraine during the menopause years (7):

  • For attacks: anti-inflammatory painkillers, triptans and gepants. Triptans and gepants are migraine-specific medicines that act on the pathways involved in an attack.

  • For prevention: CGRP monoclonal antibodies, beta-blockers, certain antidepressants and certain anti-seizure medicines. Preventive treatment is usually considered when attacks are frequent, long or disabling.

  • For stabilizing hormones: in some women, hormonal treatments such as estrogen patches or contraception, chosen with aura and stroke risk in mind (7, 9).

Each of these has its own contraindications and side effects, and some interact with other medicines, so which one fits you is a question for your doctor or a headache specialist. Our overview of perimenopause treatment covers the wider options for hot flashes, sleep and mood.

How to track your headaches through the transition

A headache record is the single most useful thing you can bring to an appointment, and it is also how you find your own triggers. Here is a simple routine for 4 to 8 weeks:

  1. Log every headache day. Date, start time, how long it lasted, pain from 0 to 10, and whether it felt like migraine (throbbing, nausea, light sensitivity) or a pressing headache.

  2. Log bleeding days, even if irregular. Mark day 1 of any bleeding and any spotting. In perimenopause, skipped or late periods are information too.

  3. Log your nights. Bedtime, wake time, how many times you woke, and whether night sweats woke you.

  4. Log what you took. Every painkiller or migraine medicine, by day. This shows whether you are drifting toward medication overuse.

  5. Note the usual suspects. Alcohol, skipped meals, unusually stressful days, travel.

  6. Look back once a week. Ask: what happened in the 1–2 days before my worst headaches? Sleep, bleeding and night sweats are the first places to look.

Our migraine headache diary guide has a ready-made format. Keep it boring and consistent; a short note every day beats a detailed note once a week.

Living with perimenopause headaches: the questions people ask next

What does a menopause headache feel like?

Usually like the headaches you already know, but more often. For women with migraine, it is typically throbbing, one-sided pain with nausea and light sensitivity (1). Others notice a dull, pressing headache after broken nights. A headache that feels completely new, sudden or "the worst ever" needs urgent care.

How long do perimenopause headaches last?

Single attacks last as long as your migraine or headache usually does; an attack lasting more than 72 hours needs urgent advice (1). The worse phase tends to follow the hormonal swings of perimenopause, which lasts about four years on average (12), and improvement after menopause can take two or three years (6).

Can low estrogen cause headaches?

The trigger is usually a fall in estrogen rather than a steadily low level. A drop in estrogen is a common migraine trigger (5), which is why stable levels — after menopause, or with continuous transdermal HRT — tend to be easier on migraine than swings (7).

Why am I suddenly getting migraines in my 40s?

Perimenopause can start migraine for the first time, and hormonal swings plus broken sleep are common reasons (5). Still, a new headache pattern at any age deserves a medical check, so a doctor can confirm it is migraine and rule out other causes.

Is it safe to take HRT if I get migraines with aura?

Guidance from the Migraine Trust and EMAS says migraine with aura is not by itself a reason to avoid HRT, and that low-dose patches, gels or sprays are preferred (5, 7). The combined birth control pill is a different case and is not advised with aura. Your prescriber will weigh your personal risks.

Before you blame yourself

When headaches pile up in your 40s, it is easy to think you are handling stress badly, drinking too much coffee, or simply "getting old." The evidence points somewhere else: your hormones are swinging, your sleep is being interrupted, and your brain's threshold for an attack is lower during this stretch. Before you blame yourself, look at what your body has already recorded. Pick one lever — for example, a fixed wake-up time, or a cooler bedroom to cut night sweats — and keep it for 2 weeks. Then compare your headache days and your sleep before and after. One change at a time is how you learn what matters for you, and it gives your doctor something concrete to work with.

When to see a doctor

See a doctor or nurse practitioner if your attacks are getting worse, lasting longer than usual, happening more than once a week or are hard to control; if you regularly get migraine around your period (1); if you are taking painkillers on more days than before; or if your headaches started for the first time in perimenopause.

Get urgent advice the same day if an attack has lasted longer than 72 hours or aura lasts longer than 1 hour (1), or if you are over 50 and have a new, lasting headache, especially with jaw pain when chewing, scalp tenderness or vision changes (10).

Call 911 for a sudden, extremely painful headache; problems speaking or remembering; vision loss or double vision; drowsiness or confusion; a seizure; a very high temperature with signs of meningitis; weakness on one side of the body or face; or a headache after a recent head injury (1).

How to bring this up with your doctor

What to bring. Your headache record from the last 4–8 weeks (headache days, bleeding days, sleep and night sweats, painkiller days), a list of every medicine and supplement you take, and whether you have aura.

What to ask, by name:

  • "Could these headaches be perimenopausal migraine, and could anything else be causing them?"

  • "Would a preventive treatment make sense for me?"

  • "If I start HRT, would a patch or gel with continuous estrogen be a better fit given my migraine?"

  • "I have migraine with aura. Which contraception is right for me now, and is HRT still an option?"

  • "Am I at risk of medication overuse headache with how often I take painkillers?"

What to say out loud. "My headaches have changed. In the last [N] weeks I had [N] headache days and took painkillers on [N] of them. They are affecting my work and sleep."

If you feel dismissed, say: "I'd like a plan for both my menopause symptoms and my migraine, or a referral to a headache specialist or a menopause specialist."

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How Welltory helps — and what it cannot do

What it cannot do. Welltory is a general wellness product, not a medical device. It does not measure hormones, it does not diagnose migraine or perimenopause, and it cannot predict an attack or tell you whether a headache is dangerous.

What it can do is collect the everyday signals that sit around your headaches, measured the same way each day against your own baseline:

  • Sleep and resting heart rate from your watch or ring. Broken sleep is one of the main reasons headaches get worse in perimenopause. You can connect Apple Health, Health Connect, Samsung Health and other sources to see your nights next to your headache days.

  • A quick HRV and heart rate reading with your phone camera. It is a spot reading, not continuous monitoring; follow the measurement guide to check that your phone is supported, and the tips for accurate HRV readings (same time, same position, before coffee).

  • Tag what happened. If you use an iPhone with an Apple Watch or Oura ring, the Today screen flags stress and recovery episodes and asks "What happened?" You can tap a suggested tag, type or talk: "migraine," "night sweats," "period day 1," "bad night." On iOS, My Patterns starts to show which tags come with stress and which with recovery after about 7 tagged events; some sections, like the month-to-month comparison, need a paid plan.

  • A record for your doctor. You can export your data as a CSV file from the web app and bring it to your appointment. Patterns are links to discuss with your doctor, not proof of a trigger.

Working this out with other women. Welltory Migraine Lab is a paid, moderated online community for women aged 18 to 65 living with migraine; you do not need a diagnosis to join. It opens on December 1, 2026; you can book your place now, and your paid period starts on the opening day. Members get a personal strategy built on their own data, a community of women with similar symptoms, and a medical board that explains what is happening in the body. It is education and peer support, not medical care, and it does not replace your clinician. Join Migraine Lab or read what Migraine Lab is, who it is for and what it costs.

How we made it

We based this article on NHS guidance on migraine and menopause, a systematic review of migraine in menopausal women in the International Journal of Women's Health, the American Migraine Prevalence and Prevention study as reported by the University of Cincinnati, guidance from the Migraine Trust, the National Migraine Centre, the European Menopause and Andropause Society and the Australasian Menopause Society, Mayo Clinic and Cleveland Clinic patient pages, and The Menopause Society's October 2026 release on hormone therapy and migraine. Every number was checked against the source we cite on November 10, 2026. Search questions came from what people in the United States most often ask about perimenopause headaches, menopause migraines and HRT. For the product section, we checked every function against the Welltory Help Center on November 10, 2026.

Made with AI tools, then edited and fact-checked by the Welltory team. See our Editorial & AI policy.

Jane Smorodnikova, co-founder of Welltory, built the methodology behind how we read physiological data.

Written by Tatsiana Yashyna.

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See what affects your energy, stress, sleep, and daily state with Welltory

This article is for educational purposes only and is not medical advice. A sudden, extremely painful headache, weakness on one side of the body or face, trouble speaking, vision loss or confusion needs emergency care. A new, lasting headache after 50, especially with jaw pain or vision changes, needs a doctor right away. This guide is published by Welltory, which makes one of the apps mentioned. Welltory is a general wellness product: it helps you track and understand your data and does not diagnose or treat any condition. Sources were retrieved on November 10, 2026.

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Written by Jane Smorodnikova

The founder and CEO of Welltory. A recognized tech leader with two Master's degrees and experience at MIT, she has scaled Welltory to over 17 million users.

Written by Tatsiana Yashyna

Deputy COO at Welltory. With a background in medicine and years of working with health data, she translates research and real physiological signals — sleep, stress, heart rate, and hormones — into clear, evidence-based explanations that help people understand what their bodies are telling them.

References

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  2. NHS — Symptoms of menopause and perimenopause. https://www.nhs.uk/conditions/menopause/symptoms/
  3. University of Cincinnati — Migraines worsen as women approach menopause (January 21, 2016; Martin VT, Lipton RB, Pavlovic J, et al., American Migraine Prevalence and Prevention Study, Headache). https://www.uc.edu/news/articles/legacy/healthnews/2016/01/h27007.html
  4. Ripa P, Ornello R, Degan D, Tiseo C, Stewart J, Pistoia F, Carolei A, Sacco S. Migraine in menopausal women: a systematic review. International Journal of Women's Health 2015;7:773–782. https://doi.org/10.2147/IJWH.S70073
  5. The Migraine Trust — Migraine and menopause (last reviewed March 2025). https://migrainetrust.org/live-with-migraine/migraine-and-menopause/
  6. National Migraine Centre — Migraine, menopause and HRT. https://www.nationalmigrainecentre.org.uk/understanding-migraine/factsheets-and-resources/migraine-menopause-and-hrt/
  7. European Menopause and Andropause Society — MenoPause Essentials: Menopausal health: Migraine (2026). https://emas-online.org/wp-content/uploads/2026/07/Menopause-Essentials-2026-Migraine.pdf
  8. The Menopause Society — Hormone therapy use associated with greater migraine burden in postmenopausal women (press release, October 2026). https://menopause.org/press-releases/hormone-therapy-use-associated-with-greater-migraine-burden-in-postmenopausal-women
  9. Mayo Clinic News Network — Women's wellness: what women need to know about migraines (May 16, 2018). https://newsnetwork.mayoclinic.org/discussion/womens-wellness-what-women-need-to-know-about-migraines/
  10. Mayo Clinic — Giant cell arteritis: symptoms and causes (June 2, 2026). https://www.mayoclinic.org/diseases-conditions/giant-cell-arteritis/symptoms-causes/syc-20372758
  11. Cleveland Clinic — Menstrual migraines (hormone headaches) (updated March 19, 2024). https://my.clevelandclinic.org/health/diseases/8260-menstrual-migraines-hormone-headaches
  12. Cleveland Clinic — Perimenopause (updated July 29, 2024). https://my.clevelandclinic.org/health/diseases/21608-perimenopause
  13. Australasian Menopause Society — Migraine headaches, menopause and MHT/HRT (information sheet). https://menopause.org.au/hp/information-sheets/migraine-headaches-menopause-and-mht-hrt
  14. NHS — Side effects of hormone replacement therapy (HRT). https://www.nhs.uk/medicines/hormone-replacement-therapy-hrt/side-effects-of-hormone-replacement-therapy-hrt/
  15. Welltory Help Center — Data sources and how to connect them. https://help.welltory.com/en/articles/11130907-data-sources-and-how-to-connect-them
  16. Welltory Help Center — Taking measurements with your smartphone camera. https://help.welltory.com/en/articles/4412277-taking-measurements-with-your-smartphone-camera
  17. Welltory Help Center — How to take accurate heart rate variability measurements. https://help.welltory.com/en/articles/3361520-how-to-take-accurate-heart-rate-variability-measurements
  18. Welltory Help Center — My Patterns (iOS) (September 3, 2026). https://help.welltory.com/en/articles/16012012-my-patterns-ios
  19. Welltory Help Center — How to export data from Welltory. https://help.welltory.com/en/articles/3368391-how-to-export-data-from-welltory

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