Poor sleep in women: causes and how to sleep better
Why women struggle with sleep, from hormones and night sweats to stress, plus an evidence-based routine and nutrients that support better sleep.
Reviewed by Emma Carter, Senior Health & Nutrition Editor
Good sleep is the foundation of energy, mood, appetite and focus, so when it slips, everything feels harder. Women face some specific sleep challenges, many of them hormonal, and knowing which one is yours helps you target the real cause instead of just counting sheep. The good news is that most disrupted sleep responds to a steady routine plus fixing whatever is waking you.
Why sleep suffers in women
A few overlapping causes explain most disrupted sleep in women.
- Hormones and life stage. Shifts across the menstrual cycle, in pregnancy, and especially around perimenopause and menopause disturb sleep. Night sweats interrupt it directly, and falling estrogen affects sleep quality even without them.
- Stress and an overactive mind. Anxiety and a racing mind at bedtime are among the most common reasons women lie awake. Stress keeps cortisol up, which works against the wind-down your body needs.
- Restless legs. An urge to move your legs at night, often worse when tired, is more common in women and is linked to low iron. It is easy to miss as a cause of broken sleep. Worth knowing before you pin everything on iron: in women whose iron deficiency was corrected, only 38.5% saw their restless legs resolve, while the rest still had symptoms (Psychiatry Investigation, 2018). Checking iron is sensible, but it is not always the whole answer.
- Everyday contributors. Caffeine and alcohol, irregular schedules, late screens, a warm bedroom and conditions like sleep apnoea all undermine sleep.
A routine that actually works
The most effective treatment for ongoing poor sleep is not a pill but the set of habits behind cognitive behavioral therapy for insomnia, which the NHS recommends first. The principles are simple and worth sticking with for a few weeks before you judge them.
- Keep bed and wake times steady, even at weekends. A regular wake time anchors the whole rhythm.
- Use the bed only for sleep. If you are awake for more than about 20 minutes, get up, do something calm and dim, and return when sleepy. Lying there frustrated teaches your brain that bed means wakefulness.
- Wind down for 30 to 60 minutes without bright screens or work.
- Get daylight early. Morning light sets your body clock and helps you feel sleepy at night.
- Keep the bedroom cool, dark and quiet, which matters doubly if you get night sweats.
What fuels wakefulness
Alongside the routine, trim the things that quietly keep you alert.
| Habit | Why it disrupts sleep |
|---|---|
| Afternoon or evening caffeine | It lingers for hours and delays deep sleep |
| Alcohol before bed | It helps you drop off but fragments the second half of the night |
| Large late meals | Digestion and reflux can keep you awake |
| Late screens | Bright light and stimulation push back your body clock |
| Long or late naps | They reduce your drive to sleep at night |
Nutrients and sleep
Food will not fix insomnia on its own, but it can help at the margins. Magnesium supports the body's relaxation response and many women find it useful in the evening, though the evidence is modest. Balanced meals with protein help steady overnight blood sugar, which can reduce early waking. Be wary of over-the-counter sleep aids marketed as miracle fixes; melatonin, for example, is prescription-only in the UK and best discussed with a doctor rather than bought unregulated.
When it is more than habits
If a solid routine does not help after a few weeks, look for an underlying cause rather than pushing through.
- Sleep apnoea shows up as loud snoring, gasping or pauses in breathing, and daytime sleepiness. It is treatable and worth diagnosing.
- Restless legs that keep you awake are worth a ferritin test, since correcting low iron often helps.
- Thyroid problems can disturb sleep in both directions, so a thyroid check is reasonable if other symptoms fit.
- Menopausal sweats waking you repeatedly can be treated, and for some women HRT transforms sleep.
- Low mood or anxiety and poor sleep feed each other, and both deserve support together.
Persistent poor sleep also drives daytime fatigue and low energy, so fixing it often lifts more than the nights.
When to see a doctor
See a doctor if poor sleep persists despite good habits, if you snore heavily or wake gasping, if you have crawling, restless legs at night, or if poor sleep comes with low mood or daytime exhaustion that affects your life. Persistent insomnia is treatable, and help is worth seeking rather than enduring.
Frequently asked questions
Why do women struggle with sleep more than men?
Hormonal shifts across the cycle, in pregnancy and around menopause affect sleep, and symptoms like night sweats interrupt it directly. Women are also more prone to anxiety-related sleep difficulty, and to restless legs, which is linked to low iron. Several of these causes are treatable.
Does menopause affect sleep?
Yes. Falling and fluctuating hormones, plus night sweats, commonly disrupt sleep in perimenopause and menopause. Treating night sweats, supporting a steady routine, and for some women hormone therapy, can all help you sleep through more often.
Does magnesium help sleep?
Magnesium supports the nervous system's relaxation response, and many women find magnesium glycinate helpful in the evening. The evidence is modest, so treat it as one supportive piece alongside good sleep habits rather than a cure.
How many hours of sleep do women need?
Most adults need around 7 to 9 hours, though the right amount varies. What matters as much as the number is quality and consistency. If you regularly wake unrefreshed despite enough time in bed, that is worth looking into rather than simply spending longer in bed.
When should I see a doctor about sleep?
See a doctor if poor sleep persists despite good habits, if you snore heavily or wake gasping, which can signal sleep apnoea, if you have crawling, restless legs at night, or if poor sleep comes with low mood or daytime exhaustion that affects your life.
References
- Symptom persistence after iron normalization in women with restless legs syndrome · Psychiatry Investigation, 2018
- About Sleep · CDC
- Insomnia · NHS
- Menopause: Symptoms · NHS