Hot Flashes and Night Sweats: What Actually Helps, According to the Evidence

One moment you're fine. The next, heat rises through your chest and face, your heart races, and you're reaching to peel off a layer. Hot flashes are one of the most common experiences of the menopause transition—and one of the most talked about.

The good news: there are real, effective options. Here's what the evidence says about hot flashes and night sweats, what may help you feel more comfortable, and when it's worth asking your doctor for more.

What is a hot flash?

A hot flash is a sudden feeling of heat, usually in the face, neck, and chest, sometimes with flushing, sweating, or a racing heart. It can last from about a minute to several minutes and may be followed by chills. When they happen at night, they're called night sweats and can disrupt sleep.

They're linked to changing estrogen levels, which affect the part of the brain that regulates body temperature. Hot flashes can start in perimenopause and continue for several years after the final period—the length varies a lot from woman to woman.

Why do hot flashes happen?

Researchers don't have every answer yet, but changing estrogen levels appear to make the brain's temperature control center more sensitive. A small rise in body temperature that you'd normally not notice can trigger the body's cooling response: flushing, sweating, and a pounding heart.

That's why a hot flash can feel so out of proportion to the room around you. Your body is reacting as if it were overheating, even when it isn't.

Not every woman has them. Some have only a few mild ones, while others have frequent flashes that disrupt sleep and work. Both experiences are common, and neither is "wrong."

Comfort strategies for everyday life

These won't stop hot flashes, but many women find they make them easier to live with:

Triggers vary from person to person, so a simple symptom log can help you spot your own patterns.

A day in the life: small tweaks that add up

Picture a typical workday. You layer a light cardigan over a breathable top, keep a bottle of cold water at your desk, and sit near a fan or open window when you can. In the evening you skip the late glass of wine you've noticed tends to set off a flash, and you keep your bedroom cool. None of these steps is dramatic, but together they can make the day feel more manageable.

If night sweats are waking you often, you may also like our guide to perimenopause and sleep.

The non-drug approaches with the best evidence

According to The Menopause Society's 2023 review of non-hormone treatments, two approaches have good evidence for reducing how much hot flashes bother women:

• Cognitive behavioral therapy (CBT) — a structured, short-term type of talk therapy that can reduce how disruptive hot flashes feel and help with sleep.
• Clinical hypnosis — guided sessions with a trained practitioner, which have been shown to reduce hot flashes for some women.

Slow breathing may also help you feel calmer in the moment (see how to calm your nervous system quickly), though it is not a proven hot flash treatment.

The same review found that many popular approaches—including most herbal and dietary supplements—don't have enough good evidence to recommend them for hot flashes.

When a hot flash starts

A tiny routine can help you feel more in control. Pause what you're doing, loosen or remove a layer, and take slow breaths: in through your nose, then a longer, slower breath out. Sip cold water and, if you can, step into cooler air. Most flashes pass within a few minutes, and having a plan can make them feel less stressful in the moment.

Myths, gently corrected

"Hot flashes only happen after your periods stop." They can start in perimenopause, while you're still having periods.

"Everyone has them the same way." Frequency, intensity, and how long they last vary a lot from woman to woman.

"Natural means safe." Herbal products can still interact with medications or cause side effects, so check with your doctor or pharmacist first.

"You just have to tough it out." You don't. Comfort strategies, therapy-based approaches, and medical treatments are all available.

Medical treatment options

If hot flashes are affecting your sleep, work, or quality of life, you don't have to just put up with them.

• Hormone therapy is the most effective treatment for hot flashes. Whether it's a good option for you depends on your age, how long it's been since your last period, and your personal and family health history.
• Non-hormonal prescription medicines are also available, including options for women who can't or prefer not to use hormones.

Only a clinician can help you weigh the benefits and risks for you. Please never start, stop, or change a medication based on an article.

Frequently asked questions

How long do hot flashes last? Each hot flash usually lasts from about a minute to several minutes. Over the years, the length of time you have them varies a lot, from a short stretch to several years after your final period.

What helps hot flashes at night? Keeping your bedroom cool, using breathable bedding and layers, and limiting alcohol and late caffeine can help some women. If night sweats keep disrupting your sleep, ask your doctor about other options.

Are hot flashes a sign of perimenopause? They often are, but they can also have other causes, such as thyroid problems or certain medications. Our guide to the early signs of perimenopause explains what else to look for.

Do supplements help with hot flashes? The Menopause Society's review found that most herbal and dietary supplements don't have enough good evidence to recommend them. Always check with your doctor or pharmacist before trying one.

Questions to ask your doctor

• Are my symptoms likely related to perimenopause, or could something else be going on?
• Would hormone therapy be safe for me? What about non-hormonal options?
• Could any of my current medications be contributing to sweating or flushing?
• Can you recommend a CBT or clinical hypnosis provider who works with menopause symptoms?

When to talk to your doctor

See your healthcare provider if hot flashes or night sweats disrupt your sleep or daily life, or if you have:

• Drenching night sweats together with fever, unexplained weight loss, or swollen lymph nodes
• Hot flashes along with a racing heart, shakiness, or weight loss (which can be signs of a thyroid problem)
• Hot flashes in your 30s or earlier, or after having gone through menopause years ago
• Any bleeding after you've gone 12 months without a period

Get care right away (call 911) for chest pain or pressure, shortness of breath, or fainting—don't assume these are hot flashes.

Hot flashes can be uncomfortable, but you have options, and you don't have to figure them out alone.

Sources

We checked the information in this article against these sources:

• The Menopause Society. The 2023 nonhormone therapy position statement (Menopause, 2023)
• The Menopause Society. Patient Education
• NIH National Institute on Aging. Hot Flashes: What Can I Do?
• ACOG. The Menopause Years (patient FAQ)