menopause and chills and shivering
By Andrea Donsky | Fact Checked | Sources
You are shivering in a warm room. Or you have just come out the other side of a hot flash and now your teeth are chattering under a blanket. Chills in midlife are real, they are poorly documented, and the most useful thing this page can do is help you work out whether what is happening to you is hormonal or something else entirely.
Are you looking for chills or cold flashes?
These get used interchangeably and they are not quite the same thing, so start here and save yourself some reading.
- A cold flash is a wave of cold that rolls through you out of nowhere, often starting in the chest or back, with no shivering necessarily involved. If that is your experience, or if the real problem is that you feel cold all the time, our guide to menopause and cold flashes is the right page.
- Chills are the shiver itself. Teeth chattering, goosebumps, the involuntary shake. That is what this page covers, along with the far more important question of when a chill means something other than your hormones.
Does menopause cause chills?
Chills are documented as part of the hot flash experience rather than as a separate menopause symptom, and that distinction is worth understanding before anyone tells you otherwise.
In interviews with 20 women experiencing vasomotor symptoms, researchers identified 33 symptom concepts, and cold sweats and chills came out as one of the key ones alongside sweating and tiredness (Haberland C et al, J Patient Rep Outcomes 2025, PMID 40591096).
What does not exist: any prevalence figure for menopausal chills, any dedicated study, or a chills item on the standard menopause symptom questionnaires. So chills are real and reported, and nobody has counted them. Both things are true.
Why do I get chills after a hot flash?
This is the best explained part of the whole picture, and it makes immediate sense once you see it.
Your body normally maintains a thermoneutral zone, a small range of core temperature inside which you neither sweat nor shiver. In women with hot flashes, that zone essentially vanishes. In a laboratory study that measured both thresholds directly, the gap between the sweating threshold and the shivering threshold was 0.0 degrees Celsius in symptomatic postmenopausal women compared with 0.4 degrees in women without symptoms (Freedman RR and Krell W, Am J Obstet Gynecol 1999, PMID 10411797).
With no buffer, a flash overshoots. During a hot flash your body dumps heat aggressively, finger blood flow rises roughly thirtyfold, you sweat, and measured core temperature falls by 0.2 to 0.6 degrees Celsius (Kronenberg F et al, Maturitas 1984, PMID 6472126). Cross the lower threshold and shivering begins (Freedman RR, J Steroid Biochem Mol Biol 2014, PMID 24012626).
So the chill is not a separate mystery. It is the back half of the same event. And damp nightclothes make it considerably worse, because evaporation keeps pulling heat out of you long after the flash has finished.
Why does this happen to the thermostat in the first place?
You will read that the hypothalamus "malfunctions" during menopause. That is not accurate, and the real explanation is more interesting.
A specific group of nerve cells in the hypothalamus, called KNDy neurons after the three signalling molecules they use, enlarge and become overactive when estrogen is withdrawn. They lose the signal that was restraining them. These neurons connect to the brain's temperature control centre, and their overactivity is what narrows the temperature range your body will tolerate before it triggers sweating or shivering (Rance NE et al, Front Neuroendocrinol 2013, PMID 23872331).
The hypothalamus is not broken. It is responding exactly as it should to the loss of a hormone. The strongest evidence this explanation is correct is that a class of drugs built specifically to block that pathway now works in practice and is recommended as a first line non hormonal option by the North American Menopause Society.
Why am I getting cold shivers in perimenopause?
Perimenopause is the stage where estrogen swings rather than declining smoothly, which means the thermoregulatory system is being pushed around unpredictably rather than settling into a new normal.
Three practical patterns come up repeatedly. Shivers after a flash, which is the mechanism above. Shivers at night, because core temperature naturally drops in the evening and you begin the night already closer to the shivering threshold. And shivers when you are anxious or stressed, which brings us to the section that matters most.
Our Top Picks for Hot Flashes
When is a chill not menopause?
This is the part of this page worth actually acting on. Several of these are common in midlife women and several are easily missed.
Infection. True rigors, meaning uncontrollable shaking chills, are a classic marker of a significant bacterial infection. Chills with a fever are not a hormone question. That is a same day medical question.
Panic attacks. "Chills or heat sensations" is a formal diagnostic criterion for a panic attack in the DSM-5-TR. This matters enormously in midlife, because a panic attack and a hot flash share heat sensations, chills, a racing heart and sweating, and women are regularly told one is the other. If the episodes come with a sense of dread, breathlessness or a feeling that something terrible is about to happen, that is worth naming to a doctor.
Iron deficiency. This one has direct experimental evidence. In a controlled cold exposure study of 30 women, those with iron deficiency anaemia had significantly lower core temperature and lower heat production during a cold challenge, and iron supplementation corrected it (Beard JL et al, Am J Clin Nutr 1990, PMID 2239756). Ask for ferritin, not just haemoglobin.
Thyroid. Cold intolerance is named among the most common features of an underactive thyroid, alongside fatigue, weight gain, constipation and dry skin (Chaker L et al, Lancet 2017, PMID 28336049). A TSH test is cheap and it settles the question. Note that no single symptom is reliable enough to diagnose it, which is exactly why the test exists.
Low blood sugar. The shaky, cold, sweaty feeling of a blood sugar dip is an adrenaline response and it is easy to mistake for a hormonal episode. If chills consistently arrive when you have gone a long time without eating, that is a clue.
Do spicy food, caffeine and alcohol trigger chills and hot flashes?
We used to say yes on this page. We were repeating received wisdom, and the evidence does not support most of it. Here is the honest version.
The North American Menopause Society's 2023 position statement on non hormonal treatments places both "avoiding triggers" and "dietary modification" in the not recommended column, at Level II and Level III evidence respectively (Menopause 2023, PMID 37252752). That is the leading body in the field declining to endorse the single most repeated piece of menopause lifestyle advice.
Going through them one at a time:
- Smoking is the one that holds up. A survey of 16,065 women aged 40 to 55 found vasomotor symptoms reported significantly more often by women who smoked, with odds ratios between 1.21 and 1.78 (Gold EB et al, Am J Epidemiol 2000, PMID 10981461). Large, well conducted, consistent with everything else we know about smoking.
- Caffeine has one study and a tiny effect. A survey of 1,806 women found a bother score of 2.30 with caffeine versus 2.15 without, which is about a sixth of a standard deviation, on a cross sectional survey that cannot show cause (Faubion SS et al, Menopause 2015, PMID 25051286). It is also entirely possible the causation runs backwards, since women sleeping badly from night sweats drink more coffee.
- Alcohol has no systematic review at all, and individual studies disagree, with some finding the opposite of what you would expect.
- Spicy food has no controlled study. None. It is repeated everywhere and rests on nothing.
What we would say instead: if you have noticed a personal trigger, avoid it, because your own pattern is real information. But there is no need to strip foods out of your life on general principle, and you should not feel you have failed at managing your symptoms because you still drink coffee.
What helps menopause chills?
- Get out of damp clothing immediately. This is the single most effective thing for the chill that follows a night sweat, and almost nobody does it because it means getting up. Keep a dry set within arm's reach of the bed.
- Layer rather than heating the room. Turning the thermostat up pushes you toward the hot flash end of a temperature window that has no buffer left. Layers track the swings better.
- Move for two minutes. Walking or a few sit to stands generates heat internally, which works faster than waiting to be warmed from outside.
- Choose wool or bamboo for nightwear and bedding. Both handle moisture far better than cotton, which holds sweat against your skin and keeps cooling you.
- Ask for ferritin and TSH. Two inexpensive blood tests that cover the two most commonly missed non hormonal causes.
- Treat the flashes, not the chills. If the chills are arriving after hot flashes, the flash is the thing to address. There is no separate treatment for the shiver.
One thing we have removed from this page: it used to say that some women find magnesium before bed reduces chills. We looked for evidence and there is none, not a trial, not a case series, nothing. Magnesium has its own modest evidence for sleep, where a meta analysis of three small trials in 151 older adults found it shortened time to fall asleep by around 17 minutes, though total sleep time did not significantly improve and the authors rated the evidence as low to very low quality (Mah J and Pitre T, BMC Complement Med Ther 2021, PMID 33865376). That is a sleep claim, honestly stated, and it is not a chills claim.
Shop Menopause Vasomotor Support
Chills that follow a hot flash are the back half of the same vasomotor event, which is why they are best addressed by looking at the flashes rather than the shiver. Morphus's Hot Flashes collection brings together the nutrients and tools we use for vasomotor symptoms through the transition. Nothing here has been studied for chills specifically, because nothing has.
Shop Vasomotor Support →These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.
When should you see a doctor about chills?
Seek same day care for chills with a fever, uncontrollable shaking, confusion, a rapid heartbeat, or feeling suddenly and severely unwell. Rigors with fever point to infection and that needs treating quickly rather than at the next available appointment.
Book a routine appointment if chills come with fatigue, weight change, hair loss, dry skin, constipation or a slow pulse, which point toward thyroid, or if you are also breathless, pale or unusually tired, which point toward anaemia. Ask for thyroid function, a full blood count and ferritin as a minimum.
Also worth raising: chills that arrive with a sense of dread, breathlessness or a racing heart, since panic attacks are common in perimenopause and very treatable once named. And any chills that started with a new medication.
Related perimenopause and menopause symptoms
If you're experiencing this symptom, you may also find these related guides helpful: cold flashes, hot flashes, and night sweats. You can also browse our full guide to other perimenopause and menopause symptoms.
Frequently Asked Questions
Can perimenopause cause chills without hot flashes?
Women report it, and since chills have never been studied as a separate menopause symptom there is no data on how often it happens alone. Chills arriving with no hot flashes at all makes it more worthwhile to check thyroid function and iron stores, and to consider whether the episodes might be panic rather than vasomotor.
Why do I get chills and shivering at night in menopause?
Core temperature naturally falls in the evening, so you begin the night closer to the shivering threshold. Add a night sweat that soaks your nightclothes and evaporation keeps cooling you after the flash has passed. Changing into dry nightwear immediately is the most effective single fix.
Are chills a sign of low estrogen?
Indirectly. Estrogen withdrawal makes KNDy neurons in the hypothalamus overactive, which narrows the temperature range your body tolerates before it triggers sweating or shivering. But no blood test can confirm this, because hormone levels in perimenopause swing too widely day to day to be meaningful.
How long do menopause chills last?
An individual chill usually lasts seconds to a few minutes, in line with the hot flash it follows. As a phase, vasomotor symptoms typically run for several years around the final period, with a very wide range between women. Chills that persist for hours, or come with a fever, are not vasomotor and need assessing.
Morphus shares educational information, not medical advice. Speak with your doctor about what's right for you.
