Age 46, Periods Stopped for 2 Months, and Severe Insomnia: Perimenopausal Hormones, Exercise Timing, Sleeping Pills, and Evidence-Based Treatment

A question from a women’s health group: age 46, two missed periods, a month of insomnia

A member wrote that she is 46, her period has not come for 2 months, and she cannot sleep, wakes on and off through the night, and has mood swings, even though she exercises 5 times a week.
This has gone on for about a month and is affecting her work during the day. She asked for advice.

Another member, aged 44, exercises every day and is fit, yet goes to bed at 9–10 p.m. and wakes at 3 a.m. almost every night, drenched in sweat even with the air conditioning at 24 °C.
Her periods have become lighter (only 3 days) or late, with hot flashes, poor appetite, sensitivity to smells, dizziness while eating, and more irritability and rumination.
She later summed it up as a “from… to…” list: from cheerful to irritable, from feeling cold to sweating, from hard to tire to easily tired, from normal to craving sweets,
and periods from 7 days down to 3 — normal on the outside, but not the same inside.
The section Age 44: night sweats and 3 a.m. waking explains this pattern separately.

Another member in her mid-40s said her mood is fine and she does not feel stressed, yet she has not slept well for about a month. She wakes around 1 a.m. and cannot get back to sleep, sweats until she is soaked, and some nights cries until morning.
Her periods skipped several months and then came back. A doctor told her it was work stress and gave her sleeping pills, so she asked whether it is really her job or her hormones.
The section Told it is work stress, waking at 1 a.m., crying at night answers this directly.

Direct answer: this is common in the late menopausal transition, and there are effective options that do not rely on long-term sleeping pills.
We do not know her health conditions, other medicines, or which sleeping pill she takes, so this article explains the general approach to discuss with her own doctor.

1. Why missed periods can bring insomnia and night waking

Direct answer: going 60 days or more without a period places you in the late menopausal transition, one of the stages when sleep problems peak.
Hormone swings, night sweats, and mood all make it harder to fall and stay asleep
(STRAW+10,
Kravitz 2003).

Data from a large study of midlife women

Following 3,045 women for 7 years showed that trouble falling and staying asleep rose as the transition progressed.
More frequent hot flashes meant worse sleep, falling estrogen was linked to trouble falling and staying asleep, and women using hormones had lower odds of disturbed sleep
(Kravitz 2008).

Progesterone and GABA: partly true

As ovulation becomes less frequent, progesterone, made after ovulation, falls first. A substance the body makes from progesterone boosts GABA receptors in the brain, which are involved in calm and sleep.
In a trial of 10 postmenopausal women, 300 mg of micronized progesterone reduced time awake at night without affecting memory
(Schüssler 2008).
Still, insomnia at this stage has several causes at once, so progesterone is only part of the explanation.

Night sweats you may not notice

Some women have few hot flashes by day but feel warm, sweat lightly, or have a pounding heart before waking at night. Swinging estrogen makes the brain’s temperature center more sensitive,
and more frequent hot flashes are linked to more night waking
(Kravitz 2008).
Noting whether you wake with sweat or heat helps your doctor choose the right treatment.

Table: causes of insomnia in the menopausal transition

Many women have more than one cause. Use this to talk with your doctor — it is not a self-diagnosis tool.

2. Exercising 5 days a week but still not sleeping

Direct answer: a meta-analysis of 23 studies found that evening exercise did not worsen sleep overall and slightly increased deep sleep.
The one caution is vigorous exercise ending within 1 hour of bedtime, which may delay sleep, shorten it, and make it less continuous
(Stutz 2019).

Insomnia can persist despite regular exercise because exercise does not fully address hormone changes, night sweats, and stress.
There is no evidence that women at this age clear cortisol so slowly that evening exercise causes insomnia.
If you want to adjust, move hard or interval sessions to the morning or afternoon, get morning daylight, and leave at least 1–2 hours after exercise for your body to cool before bed.

Age 44, Fit, Yet Drenched in Night Sweats, Waking at 3 a.m., and Moody: Reading the Early Menopausal Transition

Direct answer: hot flashes and night sweats can start while periods are still coming, as soon as cycles get shorter, longer, or lighter, and being fit does not prevent them.
A persistent difference of 7 days or more in the length of consecutive cycles marks the early menopausal transition
(STRAW+10).
In the SWAN study of 1,449 women with frequent hot flashes, symptoms lasted a median of 7.4 years, and women whose symptoms began while still premenopausal or early perimenopausal had them for more than 11.8 years
(Avis 2015).

Why the air conditioning at 24 °C does not stop the sweating

Core-temperature experiments found that in women with hot flashes, the range between the sweating threshold and the shivering threshold had shrunk to almost zero (0.0 °C versus 0.4 °C in women without symptoms).
A tiny rise in core temperature therefore triggers sweating at once, and in the same study exercise set off hot flashes in every symptomatic woman
(Freedman 1999).
The trigger sits in the brain’s temperature set point, not only in room temperature, so a cool room lowers the triggers but cannot stop them completely.

• Lower the room temperature a little more, use a fan on your body, thin layered bedding you can throw off, and moisture-wicking sleepwear
• Keep cold water by the bed and a spare set of sleepwear so you can change quickly and get back to sleep
• Limit alcohol, spicy food, and hot drinks close to bedtime, which many women find trigger symptoms
• If vigorous or interval training in the evening is followed by worse night sweats, move it to the morning or afternoon rather than giving up exercise

Why being fit does not prevent symptoms

A review of 5 randomized trials in 733 women found no difference in hot flash frequency or intensity between exercise and no treatment (3 trials, 454 women, low-quality evidence)
(Cochrane 2014).
Symptoms do not mean you are failing at self-care. Exercise is still worth it for bone, heart, mood, and sleep, but it is not a direct treatment for hot flashes.

Waking at 3 a.m. every night: is it a cortisol spike?

Cortisol naturally starts rising in the early morning hours in everyone, and the second half of the night is lighter sleep, so small triggers such as a hot flash, a full bladder, or racing thoughts wake you easily.
A Seattle study of 132 women found that overnight urinary cortisol tracked sex hormone and FSH levels during the transition
(Woods 2009),
but there is no evidence that a 3 a.m. cortisol spike is the main cause. Night waking is more clearly linked to more frequent hot flashes
(Kravitz 2008).
If you cannot fall back asleep within about 20 minutes, get up, do something quiet in dim light, and return when sleepy, following the CBT-I approach in section 3.
Early-morning waking with low mood nearly every day is a sign to get assessed for depression.

Irritability, rumination, and mood swings: not a character flaw

An 8-year study of women with no history of depression found high depressive symptom scores 4.29 times more often during the transition than before it, and diagnosed depression 2.5 times more often,
linked to fluctuating estrogen and FSH
(Freeman 2006).
The 2018 North American Menopause Society guideline calls this a window of vulnerability for depression; psychotherapy and antidepressants are the front-line treatments,
while estrogen shows antidepressant effects in perimenopausal women, especially with hot flashes, but is not approved to treat depression
(Maki 2018).
Lost sleep from night sweats lowers tolerance for small stresses, so fixing sleep helps mood too.

Smell sensitivity, poor appetite, dizziness while eating: rule out other causes first

These are not well-established core symptoms of perimenopause. At 44, lighter or late periods together with smell sensitivity and poor appetite always call for a pregnancy test first, because ovulation still happens.
An overactive thyroid can also cause sweating, palpitations, insomnia, irritability, and lighter periods, so a thyroid blood test is worthwhile.
Feeling faint or light-headed while eating may come from a post-meal blood pressure drop — see
Feeling faint while eating: post-meal blood pressure drops and which causes need checking.

When night sweats are not perimenopause

A primary care review notes that most people with persistent night sweats have no serious disease; common causes include menopause, mood disorders, reflux, an overactive thyroid, and obesity.
If the history and examination are unclear, doctors may order a blood count, tuberculosis testing, thyroid tests, an inflammation marker, and a chest X-ray
(Bryce 2020).
Some medicines, such as antidepressants, also cause sweating, so tell your doctor about every medicine and supplement you take.

Sugar cravings and tiring easily: lost sleep is the better-supported driver

A randomized crossover trial in 12 young men found that just 2 nights of short sleep lowered the satiety hormone leptin by 18%, raised the hunger hormone ghrelin by 28%, increased hunger by 24%,
and increased appetite for calorie-dense starchy and sugary foods by 33–45%
(Spiegel 2004).
Although it studied men, it helps explain why waking at 3 a.m. every night brings sweet cravings and daytime fatigue.

The SWAN study, which measured body composition with scans, found that at the start of the transition the rate of fat gain doubled and lean mass began to decline,
continuing until 2 years after the final period, while weight did not rise any faster
(Greendale 2019).
So you can look the same outside while body composition shifts inside. The idea that “the brain craves sugar because of temporary insulin resistance” has no direct evidence yet.

• Fix sleep first, since it drives the rise in hunger hormones
• Include protein and fiber at every meal — eggs, fish, tofu, beans, vegetables — to stay full longer and reach for sweets less
• Strength-train at least 2 days a week to protect muscle; see
  Why some women stay toned after 50: muscle, protein, and sleep
• For unusual fatigue, get blood sugar, thyroid, and a blood count checked — especially with thirst, frequent urination, or weight loss, which can signal diabetes

Table: symptoms at 44, mechanisms, what to rule out, and first steps

Use this to organize questions for your doctor — not to diagnose yourself

Not Stressed, but Told It Is Work Stress and Given Sleeping Pills: Waking at 1 a.m., Soaked in Sweat, Crying Until Morning — What to Ask Your Doctor Next

Direct answer: stress and the menopausal transition can happen together, so you do not have to pick one. But drenching night sweats that start along with skipped periods are a clue worth raising clearly with your doctor.
The UK NICE guideline says that in women aged 45 or over, perimenopause can be identified from recently started hot flashes plus a change in the menstrual cycle, without blood tests.
For those aged 40–45 with symptoms and a cycle change, a doctor may consider checking FSH
(NICE NG23).
A gap of 60 days or more between periods that later return marks the late transition
(STRAW+10).

Sleeping pills alone: what they help and what is missing

A short course of sleeping pills is not wrong. The American College of Physicians accepts short-term medication when CBT-I alone is not enough
(ACP 2016).
But sleeping pills are not on the 2023 North American Menopause Society list of treatments for hot flashes
(NAMS 2023),
so if sweating is what wakes you, you can still wake despite the pill. What is missing is treatment of the night sweats themselves, a taper plan, and CBT-I.
The 2024 NICE update also suggests menopause-specific CBT for sleep problems such as night waking linked to hot flashes,
alongside hormone therapy or instead of it when hormones are not suitable
(NICE NG23).

Waking at 1 a.m., not 3 a.m.: hot flashes in the first half of the night

A 4-night sleep-lab study compared 18 postmenopausal women with hot flashes, 6 without, and 12 still cycling.
In the first half of the night, the women with hot flashes woke more often, and most hot flashes came before the awakening.
A cool 18 °C room cut hot flashes in that half from 2.2 to 1.5. In the second half, REM sleep suppressed hot flashes and the pattern reversed
(Freedman 2006).
Waking around 1 a.m. soaked in sweat fits this pattern, although the study was in postmenopausal rather than perimenopausal women.

Crying at night without feeling stressed

A study following 460 women aged 36–45 with no history of depression found that those who entered perimenopause were twice as likely to develop significant depressive symptoms as those who did not,
and the risk was higher with hot flashes
(Cohen 2006).
Not feeling stressed does not rule out a mood change. Swinging hormones and weeks of poor sleep can make tears come easily.
The 2018 North American Menopause Society guideline recommends screening for depression in this phase
(Maki 2018).
If you feel low or lose interest in most things nearly every day for more than 2 weeks, tell your doctor directly, and if you have thoughts of self-harm, contact a crisis line or go to a hospital right away.

Does morning sunlight help, and melatonin is not melanin

A meta-analysis of 53 studies with 1,154 people found light therapy improved insomnia with a small-to-medium effect, with signs of publication bias.
Most studies used bright light boxes, not natural sunlight
(van Maanen 2016).
Fifteen to 30 minutes of morning sunlight is therefore a low-risk add-on to CBT-I that helps anchor your wake time, but it does not stop night sweats.
Shared posts often misspell it as “melanin,” which is skin pigment. The sleep-related hormone is melatonin, released by the pineal gland in darkness.
There is no evidence that a serotonin or melatonin “crash” is the main cause of insomnia at this age, and the American Academy of Sleep Medicine does not recommend melatonin supplements for chronic insomnia
(AASM 2017).

How much do hormones reduce hot flashes: the pooled numbers

A review of 24 randomized trials with 3,329 women found oral hormone therapy cut weekly hot flash frequency by about 75% compared with placebo, and reduced severity too.
At the same time, the placebo groups themselves improved by 57.7% from baseline
(MacLennan 2004).
Shared claims of an “80–90% reduction” are higher than the pooled data, and part of the improvement happens on its own over time.
Compounded hormones marketed as “natural” are not recommended by the North American Menopause Society 2022 statement because of unregulated dosing and missing safety data
(NAMS 2022).
Anyone with a uterus needs a progestogen with estrogen, and a doctor must check for contraindications first; see Hormone therapy.

Table: clues that help separate work stress from perimenopause

Both can happen together. Use this table to prepare questions for your doctor — not to diagnose yourself.

Questions to bring to your next appointment

• Do my drenching night sweats and skipped periods fit perimenopause? Should I have a pregnancy test, a thyroid test, or FSH?
• Which class of sleeping pill am I on, how long should I use it, and how will we taper it?
• If night sweats are what wake me, would hormone therapy or a non-hormone option suit me, and what are my contraindications?
• Can I be referred for CBT-I, to a sleep clinic, or to a gynecologist?
• Please assess my mood too, because I often cry at night.

Bring a 2-week sleep diary and your period dates, as in Before you see a gynecologist.
Asking for a gynecologist’s opinion is your right as a patient, and do not stop the sleeping pill suddenly while you wait.

3. An evidence-based sleep plan: start with CBT-I

Direct answer: the American College of Physicians recommends CBT-I as the first treatment for all adults with chronic insomnia,
and in perimenopausal and postmenopausal women with hot flashes, six telephone CBT-I sessions worked clearly
(ACP 2016,
McCurry 2016).

In this trial, insomnia severity scores fell 9.9 points with CBT-I compared with 4.7 points with menopause education,
and women felt hot flashes interfered less with their lives, even though the number of hot flashes did not change
(McCurry 2016).

Table: a daily sleep plan

Core CBT-I principles plus perimenopause care — if self-help does not work in 4–6 weeks, find a therapist or sleep clinic

Magnesium and L-theanine: weak evidence

A review of 3 trials in 151 older adults found magnesium shortened time to fall asleep by 17.36 minutes, but total sleep time did not rise significantly and the evidence was low to very low quality
(Mah 2021).
One of those trials gave 500 mg of magnesium daily for 8 weeks to 46 older adults
(Abbasi 2012).
No study has tested magnesium glycinate specifically in perimenopausal women.
L-theanine at 200 mg a day for 4 weeks improved sleep scores in 30 healthy adults, in a trial supplied by the manufacturer
(Hidese 2019).
People with kidney disease should not take magnesium on their own, and magnesium can cause loose stools.

Soy milk, bananas, almonds, and tryptophan

Eat them as part of a healthy diet, but the 2023 North American Menopause Society statement does not recommend soy foods or soy extracts for hot flashes
(NAMS 2023),
and the American Academy of Sleep Medicine advises against tryptophan, melatonin, or valerian for chronic insomnia
(AASM 2017).

4. Sleeping pills, hormones, and when to see a gynecologist

Direct answer: sleeping pills help in the short term but do not address the cause, and should not be stopped suddenly.
If night sweats or hot flashes are what wake you, treating them with hormone therapy or non-hormone medicine often helps more
(ACP 2016,
NAMS 2022).

Sleeping pills: short courses with an exit plan

The American Academy of Sleep Medicine rates its recommendations for individual sleeping pills such as zolpidem, eszopiclone, or temazepam as weak
(AASM 2017),
and the American College of Physicians advises shared, short-term decisions about medicine when CBT-I alone is not enough
(ACP 2016).
Benzodiazepines such as lorazepam or alprazolam taken for weeks and then stopped suddenly can cause rebound insomnia, restlessness, or palpitations, so they must be tapered with a doctor.
Read more in is taking sleeping pills every day dangerous, and how to find the root cause.

Hormone therapy

The 2022 North American Menopause Society statement says hormone therapy is the most effective treatment for hot flashes, and for women under 60 or within 10 years of menopause without contraindications, the benefits outweigh the risks
(NAMS 2022).
Women who still have a uterus need estrogen, such as an estradiol patch or gel, together with a progestogen such as micronized progesterone to protect the uterine lining.
Your doctor will check for contraindications such as breast cancer, blood clots, heart or stroke disease, liver disease, and unexplained bleeding.

Micronized progesterone on its own

A randomized trial in 189 perimenopausal women gave 300 mg of micronized progesterone at bedtime for 3 months.
Overall hot flash scores did not differ from placebo, but users reported fewer night sweats and better sleep quality, without more depression
(Prior 2023).
It can cause drowsiness and dizziness, so it is taken at bedtime, and it needs a prescription.

Non-hormone options

For women who cannot or prefer not to use hormones, the 2023 North American Menopause Society statement recommends CBT, clinical hypnosis, SSRIs or SNRIs such as escitalopram or venlafaxine,
gabapentin, and fezolinetant for hot flashes, and does not recommend supplements or herbal remedies
(NAMS 2023).
If mood swings are prominent, SSRIs or SNRIs can help both mood and hot flashes.

Before you see a gynecologist

• A 2-week sleep diary: bedtime, wake time, how often you wake, and whether you wake sweating
• The first day of each period over the last 6–12 months, and the bleeding pattern
• The generic name and dose of your sleeping pill, other medicines, and all supplements
• Personal and family history of breast cancer, blood clots, migraine with aura, and heart disease

Read more in 7 things women over 40 say to themselves more often: understanding perimenopause.

5. Shared claims: how accurate are they?

Direct answer: several have some basis, but going beyond the evidence can waste time and money, or lead people to drop something that helps.

“Progesterone crashes, so the brain stops releasing GABA” — oversimplified

Progesterone-derived substances do boost GABA receptors, but the brain does not stop making GABA, and insomnia at this stage comes from several causes together: swinging estrogen, hot flashes, mood, and other conditions
(Kravitz 2008).

“Evening exercise leaves cortisol lingering, so stop by 5 p.m.” — not what the evidence shows

A meta-analysis found evening exercise did not worsen sleep overall; the caution is vigorous exercise ending within 1 hour of bedtime
(Stutz 2019).

“Magnesium glycinate and L-theanine give deep sleep safely” — weak evidence

Studies are few, small, and low quality, and none were done in perimenopausal women. Trying them is reasonable without kidney disease, but they are not core treatment
(Mah 2021).

“Soy milk and tryptophan foods build melatonin” — no evidence they improve sleep

Professional guidelines recommend neither soy for hot flashes nor tryptophan for insomnia
(NAMS 2023,
AASM 2017).

“Natural progesterone fixes the root cause safely” — needs medical supervision

Micronized progesterone eased night sweats and sleep for some women, but overall hot flashes did not differ from placebo in the 189-woman trial,
and contraindications must be checked first. Choosing between progesterone alone and full hormone therapy is a shared decision with your doctor
(Prior 2023).

Table: comparing treatments for perimenopausal insomnia

Therapy, hormones, medicines, supplements, and lifestyle compared by fit, evidence, and cautions — generic drug names only

Frequently asked questions (FAQ)

Why can’t I sleep and keep waking at night now that my periods have stopped for 2 months at 46?

Going 60 days or more without a period at this age places you in the late menopausal transition. The ovaries ovulate less often, so progesterone, which is made after ovulation, falls, and estrogen swings unpredictably. A survey of 12,603 women aged 40 to 55 found sleep difficulty in about 45 percent of those in late perimenopause, compared with 38 percent overall. Common reasons for night waking are night sweats or hot flashes, mood and worry, and other conditions that become more common at this age, such as thyroid disease and sleep apnea.

I exercise 5 days a week, so why can’t I sleep? Should I stop exercising in the evening?

You do not need to stop. A meta-analysis of 23 studies found that evening exercise did not worsen sleep overall and slightly increased deep sleep. The one caution is vigorous exercise ending within 1 hour of bedtime, which may delay sleep and shorten it. Exercise supports overall health but does not fully address hormone changes, night sweats, or stress, so insomnia can persist despite regular workouts. If you want to adjust, move hard sessions to the morning or afternoon and get morning daylight.

Do magnesium and L-theanine help with sleep?

The evidence is weak. A review of 3 trials in 151 older adults found magnesium helped people fall asleep about 17 minutes faster, but the evidence quality was low to very low, and no study has tested magnesium glycinate specifically in perimenopausal women. L-theanine at 200 mg a day improved sleep scores in a trial of 30 healthy adults that was supported by the manufacturer. Both are fairly safe for most people, but people with kidney disease should not take magnesium on their own, and neither replaces core treatment such as CBT-I.

I have been taking sleeping pills for a month. How do I stop?

Do not stop suddenly, especially benzodiazepines, because rebound insomnia, palpitations, or restlessness can follow. Ask your doctor to plan a gradual taper alongside CBT-I. The American College of Physicians recommends CBT-I as the first treatment for all adults with chronic insomnia, with short-term medicine only when needed after discussing benefits and harms. Never combine sleeping pills with alcohol, and do not drive if you still feel drowsy in the morning.

Can hormone therapy or progesterone help my sleep, and when should I see a gynecologist?

Hormone therapy is the most effective treatment for hot flashes and night sweats, and for women under 60 or within 10 years of menopause without contraindications, the benefits outweigh the risks, so it helps sleep when night sweats are the trigger. In a trial of 189 perimenopausal women, 300 mg of micronized progesterone at bedtime led users to report fewer night sweats and better sleep, though overall hot flash scores did not differ from placebo. See a gynecologist when symptoms affect work or daily life; your doctor will check for contraindications such as breast cancer, blood clots, heart disease, or abnormal bleeding before choosing a medicine.

Do soy milk, bananas, or almonds help with sleep?

They are healthy foods, but the evidence for sleep is thin. The 2023 North American Menopause Society statement does not recommend soy foods or soy extracts for treating hot flashes, and the 2017 American Academy of Sleep Medicine guideline advises against tryptophan as an insomnia treatment. Eat them as usual, but do not expect them to replace core treatment, and avoid heavy meals or large drinks close to bedtime.

Does missing my period for 2 months at 46 mean I have reached menopause? What tests do I need?

Not yet. Menopause is confirmed after 12 months in a row without a period. Going 60 days or more without one marks the late menopausal transition, when ovulation and pregnancy are still possible, so take a pregnancy test first and keep using contraception as your doctor advises. Your doctor may check thyroid function and a blood count and assess depression or sleep apnea depending on symptoms. Hormone blood tests are usually not needed at this age because levels swing widely.

Which symptoms need prompt medical care?

If you have thoughts of harming yourself or wanting to die, contact a crisis line or go to a hospital right away. See a doctor soon if you feel depressed or very anxious nearly every day for more than 2 weeks, snore loudly with observed breathing pauses, nearly fall asleep while driving, have very heavy or irregular spotting, have palpitations or chest pain, lose weight with tremor and heat intolerance, or keep needing higher doses of sleeping pills.

I am 44 and exercise every day. Why do I still wake up drenched in sweat with the air conditioning on, and wake at 3 a.m. every night?

Hot flashes and night sweats can start while periods are still coming but the cycle is starting to change. As estrogen fluctuates, the temperature range the body tolerates narrows to almost zero, so a tiny rise in core temperature triggers sweating. A cool room helps partly but cannot stop it completely. A review of 5 randomized trials found no evidence that exercise reduces how often hot flashes occur, so being fit does not prevent them. Waking around 3 a.m. happens easily because sleep is lighter in the second half of the night and cortisol rises naturally in the early morning, so even a mild hot flash can wake you. Ask about a pregnancy test and a thyroid check, and see a doctor if night sweats come with fever, weight loss, or a chronic cough.

Are mood swings, irritability, and sensitivity to food smells at 44 linked to perimenopause, and what should be checked?

Mood swings can be linked. An 8-year study of women with no history of depression found high depressive symptom scores were about 4 times more likely during the menopausal transition than before it, tied to fluctuating hormones. Poor sleep from night sweats adds to irritability. Psychotherapy and antidepressants prescribed by a doctor are the main treatments for depression in this phase. Sensitivity to smells, loss of appetite, and dizziness while eating are not well-established perimenopausal symptoms. Take a pregnancy test first because ovulation still happens, get a thyroid check, and call emergency services right away if dizziness comes with slurred speech, facial droop, or limb weakness.

In early perimenopause, why do I crave sweets and tire easily even though I look the same on the outside?

The best-supported cause is lost sleep. An experiment found that just 2 nights of short sleep raised the hunger hormone by 28 percent and increased appetite for calorie-dense starchy and sugary foods by 33 to 45 percent, so waking at 3 a.m. with night sweats every night can drive sweet cravings and daytime fatigue. The SWAN study also found that at the start of the transition, fat gain doubles and muscle begins to decline while weight does not rise any faster, so you look the same outside while body composition shifts inside. Fix sleep first, include protein and fiber at every meal, do strength training, and if you have unusual fatigue, thirst, frequent urination, or weight loss, get your blood sugar, thyroid, and blood count checked.

My doctor said it is work stress and gave me sleeping pills, but I do not feel stressed, and I have night sweats and skipped periods. What should I do?

Stress and the menopausal transition can happen together. A short course of sleeping pills helps you fall asleep, but sleeping pills are not on the 2023 North American Menopause Society list of treatments for hot flashes, so if sweating is what wakes you, you can still wake despite the pill. Go back with a 2-week sleep diary and ask whether the pattern fits perimenopause, ask for a pregnancy test and a thyroid check, and at age 40 to 45 the NICE guideline says an FSH test can be considered. Ask about a plan to taper the sleeping pill, a referral for CBT-I, and treating night sweats with hormone therapy or a non-hormone medicine, or ask for a gynecology referral. Do not stop the sleeping pill suddenly on your own.

I wake at 1 a.m., cannot get back to sleep, and cry until morning. Is this linked to perimenopause?

It can be. A sleep-lab study found that in the first half of the night, hot flashes usually come before awakenings, while in the second half REM sleep suppresses hot flashes, so waking around 1 a.m. drenched in sweat fits this pattern. For crying and low mood, a study of 460 women aged 36 to 45 with no history of depression found that those who entered perimenopause were twice as likely to develop significant depressive symptoms, and the risk was higher with hot flashes. Not feeling stressed does not rule this out. Ask your doctor to assess your mood, and if you have thoughts of harming yourself, call your local crisis line or go to a hospital right away.

Does 15 to 20 minutes of morning sunlight help me sleep, and what is the difference between melatonin and melanin?

Morning light helps set the body clock. A meta-analysis of 53 studies with 1,154 people found light therapy improved insomnia symptoms with a small-to-medium effect, and most studies used bright light boxes. Morning sunlight is therefore a low-risk add-on to CBT-I, but it does not stop night sweats. Melatonin is the hormone the pineal gland releases in darkness to signal sleep time, while melanin is skin pigment and has nothing to do with sleep. The 2017 American Academy of Sleep Medicine guideline does not recommend melatonin supplements for chronic insomnia.

Scientific mechanism

Less frequent ovulation: in the late menopausal transition, cycles without ovulation become more common. Progesterone is made only by the corpus luteum after ovulation, so it falls quickly,
while estrogen still swings widely and follicle-stimulating hormone (FSH) rises. Falling estrogen and rising FSH are linked to trouble falling and staying asleep
(STRAW+10,
Kravitz 2008).

Progesterone and GABA receptors: the body converts progesterone into a neurosteroid that makes GABA-A receptors work harder, with a mild calming effect.
Sleep EEG studies show progesterone reduces time awake at night in postmenopausal women
(Schüssler 2008).

The temperature center and the arousal loop: as estrogen swings, the temperature range the hypothalamus tolerates narrows, so slight warmth during sleep triggers vessel widening, sweating, and waking.
After repeated wakeful nights, the brain starts linking the bed with worry and alertness, so insomnia can persist even when hot flashes ease. CBT-I works by reshaping this loop, even though hot flash counts do not change
(McCurry 2016).

The first and second halves of the night differ: REM sleep, which dominates the second half of the night, dampens the body’s temperature responses.
Hot flashes therefore wake you more easily in the first half of the night, while in the second half waking tends to come first and the hot flash follows
(Freedman 2006).

Compiled and reviewed by Asst. Prof. Dr. Norawit Raatpiboon

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