Why is my sleep so bad during menopause?

If you're still hot, it helps to let the heat go first: the duvet off, a sip of water, a dry t-shirt if yours is damp, and the light kept low. A spare kept by the bed saves hunting for one. A flash is the body shedding heat: blood vessels near the skin open and sweat starts across the upper body⁵5 de Zambotti et al., 2014. It usually lasts one to five minutes⁵, so most of what you're feeling is already on its way out.

Some nights you may wake with your heart already going, and only then feel the heat climb from your chest. Researchers in the San Francisco Bay area saw the same thing when they brought thirty-four women in perimenopause into a sleep lab for sixty-three nights⁵5 de Zambotti et al., 2014 and caught each flash by the moisture on their skin. The heart rate shifted up to two minutes before the skin began to sweat⁵. Their idea, which is still a theory, is that the flash and the waking are both set off by the same alarm-like burst in the nervous system⁵, so on some nights you wake first and the heat follows after.

The flashes came most often in the fifth hour after the lights went out⁵. For someone who turns the light off around eleven, that is the hour between three and four in the morning.

Researchers don't fully agree on the order yet, and one lab study found that early in the night most flashes came before the waking, while later in the night the order reversed⁷7 Freedman & Roehrs, 2006. All of this comes from small groups of healthy volunteers in sleep labs, so it is a sketch of what may be happening in your own bed.

Most flashes woke the women in that lab, though the waking around them made up, on average, only about a quarter of the time they spent awake after first falling asleep⁵5 de Zambotti et al., 2014. Most of their wakefulness came from somewhere other than the heat. Their sense of how long they'd been awake followed the waking around flashes, and not the rest⁵, which may be why the heat feels like the whole story of a bad night when it is often only how the night began.

One account of how the longer waking gets started is that falling hormone levels may make women more reactive to stress, raising arousal and worried thoughts about sleep⁸8 Breitinger-Blatt et al., 2026. Those thoughts can make flashes worse in turn⁸, a loop that may help insomnia start and stay. That's still an idea, and no trial has tested it. The pattern itself is better known. Studies that followed women over years have found that flashes and insomnia tend to come together, and that the more severe the flashes, the more likely insomnia is to start and to last⁸⁹9 Baker et al., 2018.

So a bad night is often two things, what wakes you and what keeps you awake. A flash or a hormonal shift can be the spark. The long, wakeful stretch afterward can turn into an insomnia with a pattern of its own, which is why it can be there on cool nights too, and why it may stay as the flashes ease. That second part has its own treatment, CBT for insomnia. In two trials of women in these years it eased the insomnia, and in the one that counted flashes, it did so while they came as often as before.

Perhaps you've been told it's just your age, or wondered it yourself at 4am. Waking in the night is the most common complaint of these years⁹9 Baker et al., 2018. A large American study called SWAN asked the same women about their sleep year after year, and found that the odds of trouble staying asleep rose across the transition, even after allowing for other health and life factors⁹. Falling hormone levels were linked to more trouble falling and staying asleep⁹, which points to the menopause itself.

When some of the same women slept in a lab, the recordings found no differences by menopausal stage⁹, and researchers don't agree yet on what to make of that. The same recordings did find that women in late perimenopause and after had more fast brain activity during sleep, the sign of a brain staying more alert, partly explained by hot flashes⁹. That more alert sleeping brain is a real finding, and it suggests something a count of minutes asleep can miss.

The flashes often take years to end¹⁰10 Avis et al., 2015. The waking that lingers is another matter, because it responds to treatment now¹1 McCurry et al., 2016. When SWAN followed women with frequent flashes, half of them had flashes for 7.4 years or more¹⁰. If yours began late, after your periods had stopped, the end may be nearer: those women had them for the shortest time¹⁰.

That figure is about the flashes alone, since SWAN didn't measure how long the insomnia lasts on its own. That part of your nights doesn't have to be waited out. In a trial of CBT for insomnia by phone, it eased even while the flashes kept coming¹.

In western Washington State, 106 women aged 40 to 65 who had insomnia and at least two hot flashes a day joined a trial¹1 McCurry et al., 2016. Some had six phone sessions of CBT for insomniaCBT for insomnia Cognitive behavioral therapy for insomnia: a short course of practical, talking-based techniques that help retrain sleep. It’s the first treatment doctors recommend for long-term insomnia. over eight weeks, and the others had six phone sessions about menopause in general. By twenty-four weeks, eighty-four percent of the CBT-I group were in the range of no insomnia, against forty-three percent¹. Their flashes came just as often as before, though the women found them less disruptive¹, so the heat kept coming and the long nights mostly stopped.

A trial in Detroit found much the same in 150 postmenopausal women, average age 56, whose chronic insomnia had begun with menopause¹¹11 Drake et al., 2019, some of them years past their last period. Six months on, the CBT-I group slept forty to forty-three minutes more a night than the other groups¹¹, which is the better part of an hour given back to nights like the one you may be having. Sleep restriction on its own, which limits the time spent in bed, helped nearly as much as the full course, and sleep hygiene advice did little¹¹.

Much of what helped these women, then, was spending less time lying awake in bed. After a bad night, you could keep your usual bedtime and getting-up time, because sleeping in or going to bed early to catch up stretches the time in bed out again. That's reasoning from this one trial, which didn't test it directly.

The MsFLASH researchers then pooled four trials in 546 women with insomnia and hot flashes, and CBT-I eased insomnia the most¹²12 Guthrie et al., 2018, by more than twice as much as anything else they tested. Exercise and yoga helped less, as did several medicines, and omega-3 supplements did nothing for insomnia¹². The order is a rough one, because they compared each treatment with its own trial's control group rather than with the others.

CBT-I is the recommended first treatment for insomnia disorder, and it comes by phone, online, through apps and in person⁸8 Breitinger-Blatt et al., 2026. It can feel worse before it feels better, since in the first weeks sleeping less can bring daytime sleepiness, poorer concentration and low mood⁸. That is worth knowing if you drive a lot, or if your work needs a sharp mind in those weeks. What is CBT for insomnia, and what would it ask of me? describes what it involves and how to find it.

For the flashes and night sweats themselves, hormone therapy is the most effective treatment there is²2 NAMS, 2022. Sleep is a separate question, and the evidence there is thinner. In pooled trials, hormone therapy improved sleep quality moderately in women who had flashes, with no clear benefit in women without them, and for some women it left sleep still troubled⁸¹³8 Breitinger-Blatt et al., 202613 Cintron et al., 2017. Those trials were at moderate to high risk of bias¹³. So the two treatments reach different parts of the night: hormone therapy the flashes that wake you, and CBT-I the waking that lingers afterward.

Whether hormone therapy suits you depends mostly on your age, how long it has been since your last period and your health, and its risks depend on the type, the dose, how long it's taken, how it's taken, when it's started and whether a progestogen is included².

If hormones aren't for you, or you'd rather not, there are other treatments for the flashes, and you can name any of them to your doctor. The menopause society recommends CBT, clinical hypnosis, some antidepressants (SSRIs and SNRIs), gabapentin and fezolinetant, each with good evidence, and oxybutynin as well¹⁵15 NAMS, 2023. A newer drug, elinzanetant, which came after that statement, cut moderate to severe flashes by about three a day more than placebo in trials, and improved sleep disturbance¹⁶16 Pinkerton et al., 2024. Those trials were funded by its maker, measured sleep by the women's own reports and included no women still in perimenopause¹⁶. If your periods haven't yet stopped, the evidence doesn't reach you yet. It isn't taken alongside certain medicines, including some antifungals and antibiotics, or with severe liver problems¹⁷17 Lee, 2026. Whichever of these treatments you're considering, your doctor or pharmacist can check it against the medicines you already take, with extra care after breast cancer treatment.

The same society doesn't recommend supplements, herbal remedies, soy, cannabinoids, acupuncture, paced breathing or cooling techniques as treatments for the flashes¹⁵, which is a separate matter from pushing the duvet off to get back to sleep. Nor does it count exercise, yoga, mindfulness or relaxation as a flash treatment¹⁵, though exercise and yoga did bring small gains for sleep in the pooled trials¹²12 Guthrie et al., 2018. If you've tried melatoninmelatonin A hormone your brain releases as darkness falls, telling the rest of your body that night has come. It's also sold as a tablet. or an evening glass of wine, Is it okay to take melatonin every night? and Does alcohol help you sleep? each look at one of them.

Sometimes it can, and one thing to ask your doctor about is sleep apneasleep apnea A condition in which the throat repeatedly narrows or closes during sleep, briefly stopping or reducing breathing. Loud snoring, gasping and daytime sleepiness are common signs., which becomes more likely after menopause. In one large Wisconsin study, women past menopause had between two and a half and three and a half times the odds of it, compared with women before menopause, even after allowing for age, weight and smoking³3 Young et al., 2003.

You might barely snore, with no one beside you hearing your breathing stop, and still feel worn out, low or unable to stay asleep. That picture fits apnea in women more often than in men: they're more likely to have insomnia and mood problems, and less likely to have the snoring or pauses in breathing that someone else notices⁴4 Dunietz et al., 2026. It gets missed more often, because the screening questions were largely built around men's symptoms⁴. Early menopause, including surgery to remove both ovaries, raises the risk further⁴.

In one lab study of 102 women aged 44 to 56 who volunteered because their sleep was already disturbed, just over half had sleep apnea, restless legs or both¹⁸18 Freedman & Roehrs, 2007. They came forward because they slept badly, so that's no guide to women in general. It does show how often something else can be behind the bad nights, and when it is, easing the flashes may not mend the nights.

If you're past menopause and often tired or sleepy in the day, wake unrefreshed or snore, you could ask to be checked³. The same goes for insomnia with low mood that won't shift⁴, snoring or not, since apnea brings insomnia and low mood more often in women than it does in men. Do I have sleep apnea? explains what a test involves.

If the waking doesn't ease with CBT-I, that's another reason to ask about apnea. The trial in women with flashes left out those with a diagnosed sleep disorder and didn't test the others for one¹1 McCurry et al., 2016, so it can't say how CBT-I fares in women who also have apnea.

You may have noticed it runs both ways: after a run of bad nights your mood dips, and on low days the nights get harder. The risk of depression is higher in these years too. The SWAN researchers kept asking the same women how they were at visit after visit. They found that the women were two to four times more likely to develop major depression during the transition and early postmenopause than before it⁹9 Baker et al., 2018. The women who started out sleeping poorly fared worse: they were more likely to have depression that lasted or came back⁹.

If you've been low before, that matters too. Most women who have a major depression in perimenopause have had one before, and sleep trouble is part of how it shows¹⁹19 Maki et al., 2018, so a change in your nights can signal that it's coming back. A long run of bad nights is something to tell your doctor about, for your mood as much as your sleep.

Depression is more than a few bad days. Its core signs are low mood or loss of interest most of the day, nearly every day, for at least two weeks²⁰20 National Institute of Mental Health, 2024, usually with other symptoms alongside, and in middle age it can show up as waking in the night or too early in the morning²⁰. A doctor or therapist can treat it with the proven depression treatments, antidepressants and talking therapy¹⁹. There's some evidence that estrogen lifts mood in perimenopausal women, especially those who also have flashes¹⁹, though it isn't approved for depression. If low mood ever comes with thoughts of suicide, please tell someone tonight. In the US, the 988 Suicide & Crisis Lifeline is free and answers by call or text at any hour of the night²¹21 988 Lifeline, 2026, so you don't have to be alone with it until morning:

• US and Canada 988 Suicide & Crisis Lifeline: call or text 988 (any time)
• UK and Ireland Samaritans: call 116 123 (free, any time)
• Australia Lifeline: call 13 11 14 (any time)
• Anywhere else Find A Helpline: visit findahelpline.com (lists free helplines by country)

If the heat comes again tonight, you'll know it for what it is: a few minutes of the body letting go of warmth. The duvet can lie where you pushed it, the water can wait within reach and the clock can stay face down. And if you're still awake an hour later, that hour belongs to something else, something that answers to treatment while the flashes run their course.