Hot flashes and night sweats can persist through perimenopause even after you have tried the fan by the bed, dressing in layers, and cutting back on alcohol. Many patients come to me when the heat waves are interrupting their workday and the night sweats are breaking up their sleep, and they want to know what options are available.
In my practice at Tall Tree Cordova Bay and James Bay, I treat hot flashes and night sweats with a clear map of options. Hormone therapy (HRT) is the most effective one, and for many patients it is a good fit. For patients who cannot or prefer not to use hormones, there are non-hormonal options with real evidence behind them too. The goal is to find the one that fits your health history and treatment preferences.
So why do hot flashes happen, and how long do they last?
As estrogen levels shift and fall in perimenopause, the brain's temperature-control centre becomes more sensitive. Small changes in body temperature that you would not have noticed before can set off a hot flash: a rush of heat, flushing, sweating, and sometimes a racing heart. At night the same thing shows up as night sweats, and it often breaks up sleep.
They can last longer than most people expect. In SWAN, a large study that followed midlife women over many years, frequent hot flashes or night sweats lasted a median of about seven and a half years in total, and about four and a half years after the final period. Patients whose hot flashes started earlier, while their periods were still regular or just starting to change, tended to have them the longest.
So if you are hoping to simply wait it out, it is fair to know the wait can be long. You do not have to tough it out if it is affecting your sleep, work, or mood.
What the research actually shows about HRT
Hormone therapy has the strongest evidence of any treatment for hot flashes and night sweats. A Cochrane review of 24 placebo-controlled trials found that hormone therapy reduced weekly hot flash frequency by about 75% compared with placebo, and made the hot flashes that remained less severe.
The Menopause Society (formerly NAMS) and the Society of Obstetricians and Gynaecologists of Canada (SOGC) both name hormone therapy as the most effective treatment for hot flashes and night sweats. For healthy patients under 60, or within 10 years of their final period, The Menopause Society concludes the benefits generally outweigh the risks for bothersome symptoms.
In my practice, systemic HRT usually means body-identical estradiol, as a patch or gel, paired with oral micronized progesterone for patients who still have a uterus. The progesterone protects the uterine lining while you take estrogen, and many patients find it helps with sleep and mood too. A progestin-based IUD is another way to protect the lining. Whether HRT is right for you depends on your own history, and that is what the consult is for.
What about non-hormonal options?
Some patients cannot use estrogen, for example after an estrogen-sensitive breast cancer. Others simply prefer not to. The Menopause Society's 2023 review of non-hormonal treatments recommends these options based on good evidence:
- Cognitive behavioural therapy (CBT) and clinical hypnosis. Both have good evidence for making hot flashes less bothersome, without medication.
- Certain antidepressants (SSRIs and SNRIs). Some of these medications, at doses often lower than those used for mood, reduce hot flashes.
- Gabapentin. A medication that can reduce hot flashes and is sometimes taken at bedtime when night sweats are the main problem.
- Fezolinetant. A newer non-hormonal prescription that works directly on the brain's temperature-control pathway. In a large phase 3 trial, it reduced how often and how strongly hot flashes hit compared with placebo, with improvements starting in the first week and holding through a year.
Each of these has its own side effects and safety checks, and some may be managed with your GP.
Where do supplements, acupuncture, and lifestyle approaches fit?
Many patients ask about herbal remedies, supplements, acupuncture, and lifestyle changes, and it is a fair question. When The Menopause Society reviewed the research on hot flashes in 2023, it found the evidence for these approaches limited or mixed, so they were not among its recommended treatments. Limited evidence is not the same as no benefit, and many patients value these approaches as part of looking after themselves through menopause.
Exercise, good sleep, limiting alcohol, and a cooler bedroom can all support you through menopause and make a rough night easier. If you are using or considering a supplement or another therapy, bring it to your visit so we can look at it alongside the rest of your plan and check that it fits with any medications.
Is this a fit for you?
It may be a good conversation when:
- Hot flashes or night sweats are breaking up your sleep or getting in the way of work and daily life
- You have tried lifestyle changes and the symptoms persist
- You want to understand whether HRT is safe for you, or what your non-hormonal options are
- You have been told you cannot take hormones and want to know what else has evidence
A consult decides what is right for you. Some situations need extra care or a different plan:
- A history of breast cancer, blood clots, stroke, heart disease, or liver disease changes which options are safe and is reviewed carefully before anything starts.
- Any bleeding after menopause (after 12 months without a period) should be checked promptly.
- Hot flashes with other new symptoms, such as unexplained weight loss, a racing heart at rest, or fevers, can have other causes, like thyroid changes, that are worth ruling out.
What happens at the visit
Menopause consult (booked as a Naturopathic Consultation): we go through your symptoms, how often the hot flashes and night sweats come, how they affect your sleep and days, your cycle history, your personal and family medical history, medications, and anything you have already tried. We talk through HRT and the non-hormonal options and decide together what fits. If HRT is a good fit, we choose the form that suits you and I prescribe it at that visit.
Follow-up: we check how your symptoms are responding, how your sleep is settling, and any side effects, and adjust the plan together. From there we review the benefits and risks of continuing at regular visits.
Common questions
Will hot flashes go away on their own? For most patients they ease with time, but "with time" can mean several years. SWAN found frequent hot flashes lasted a median of about seven and a half years in total. If they are affecting your sleep or your days now, there is no benefit to waiting it out unless that is what you prefer.
Is HRT safe? For many healthy patients under 60, or within 10 years of their final period, major menopause societies conclude the benefits of HRT for bothersome symptoms generally outweigh the risks. It is not right for everyone, which is why we go through your personal and family history carefully first and review the plan over time.
I can't take estrogen. Am I out of options? No. CBT, clinical hypnosis, certain SSRIs and SNRIs, gabapentin, and fezolinetant all have good evidence behind them for hot flashes. The right choice depends on your history, other medications, and what matters most to you.
Can I still have hot flashes in perimenopause while I'm getting periods? Yes. Hot flashes often start while periods are still coming, sometimes years before the final period. SWAN found patients whose hot flashes started early often had them the longest, which is one reason it can be worth looking at options sooner.
What about night sweats and sleep? Night sweats are hot flashes that happen at night, and they are one of the most common reasons sleep falls apart in perimenopause. Treating the hot flashes often helps sleep too. If sleep is still a problem after the night sweats settle, we look at that on its own.
If hot flashes or night sweats are getting in the way of your sleep or your days and you are in British Columbia, you are welcome to book a consult. We can sit down together and map whether HRT, a non-hormonal option, or a mix of approaches is a good fit for you.
If vaginal dryness or discomfort is also part of the picture, my post on vaginal estrogen in menopause covers that side of things. And my post on the perimenopause labs to ask for is a good place to start before your appointment.
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Sources
- Avis NE, Crawford SL, Greendale G, et al. Duration of menopausal vasomotor symptoms over the menopause transition. JAMA Intern Med. 2015;175(4):531–539. https://doi.org/10.1001/jamainternmed.2014.8063
- MacLennan AH, Broadbent JL, Lester S, Moore V. Oral oestrogen and combined oestrogen/progestogen therapy versus placebo for hot flushes. Cochrane Database Syst Rev. 2004;(4):CD002978. https://doi.org/10.1002/14651858.CD002978.pub2
- The 2022 hormone therapy position statement of The North American Menopause Society. Menopause. 2022;29(7):767–794. https://doi.org/10.1097/GME.0000000000002028
- The 2023 nonhormone therapy position statement of The North American Menopause Society. Menopause. 2023;30(6):573–590. https://doi.org/10.1097/GME.0000000000002200
- Yuksel N, Evaniuk D, Huang L, et al. Guideline No. 422a: Menopause: vasomotor symptoms, prescription therapeutic agents, complementary and alternative medicine, nutrition, and lifestyle. J Obstet Gynaecol Can. 2021;43(10):1188–1204.e1. https://doi.org/10.1016/j.jogc.2021.08.003
- Lederman S, Ottery FD, Cano A, et al. Fezolinetant for treatment of moderate-to-severe vasomotor symptoms associated with menopause (SKYLIGHT 1): a phase 3 randomised controlled study. Lancet. 2023;401(10382):1091–1102. https://doi.org/10.1016/S0140-6736(23)00085-5
Disclaimer
This content is general educational information, not medical advice, and not a substitute for individualized care from your own qualified provider. Dr. Sydney Green, ND provides clinical care only to patients within British Columbia.