Why do I pee so much at night?
Usually because your body makes more urine after dark, your bladder holds less, or your sleep is broken. Evening drinks, caffeine, leg swelling, overactive bladder, sleep apnea and menopause are common triggers. Nearly 1 in 4 adults over 65 wake twice or more a night, according to a 2022 Canadian Urological Association report.
Peeing at night in women, at a glance
| Question | Short answer |
|---|---|
| What is it called? | Nocturia: waking one or more times a night to urinate. |
| How common is it? | Up to 77% of women over 70 wake at least once a night. |
| When does it become a problem? | Usually at two or more trips a night, or when it ruins your sleep. |
| Main causes? | Too much urine at night, a small bladder capacity, or broken sleep. |
| Easiest fixes? | No drinks 2 hours before bed, less caffeine and alcohol, legs up in the evening. |
| See a doctor if… | You wake twice or more a night, or you have blood, burning, fever or swollen legs. |
How many times a night is normal for a woman to pee?
Waking once is common, and waking twice or more is where doctors start looking for a cause. A 2010 review of 43 studies found that 20% to 44% of women aged 20 to 40 wake at least once a night, and 74% to 77% of women over 70 do. Two or more trips affected 4% to 18% of younger women.
The Canadian Urological Association adds that in a survey of 1,000 Canadian adults, 36% woke at least once a night and 9% woke twice or more. Among adults over 65 those numbers rose to 50% and 24%. So if you're waking at night, you're far from alone.
Why do I pee so much at night but not during the day?
Your body may be making too much of its urine at night, a pattern called nocturnal polyuria. The Canadian Urological Association defines it as producing more than 20% of your daily urine overnight between ages 25 and 65, or more than 33% after 65. It is the most common reason people wake up to go.
The usual suspects are fluids and salt late in the day, swelling in the legs (peripheral edema), and sleep apnea. Some medicines play a part too. That is why the same person can feel fine by day and be up three times a night.
What causes frequent urination at night in women?
The causes fall into three groups: too much urine at night, a bladder that can't hold much, and sleep that is easily broken. Most women have more than one at the same time. The Canadian Urological Association lists these as the main ones to check.
- Evening fluids, caffeine and alcohol. Drinks late in the day mean more urine overnight.
- Overactive bladder. The bladder muscle contracts at the wrong times and gives urgent signals, even at night.
- Leg swelling, heart or kidney problems. More than 80% of people with stable heart failure report at least one night-time trip.
- Diabetes. High blood sugar makes the body produce more urine all day and night.
- Sleep apnea. Interrupted breathing changes hormone signals to the kidneys.
- Medicines. Diuretics, ACE inhibitors and lithium increase urine. Calcium channel blockers and steroids can cause leg swelling.
- Menopause. Hormone changes and hot flashes can play a part (more below).
- Weight. The report calls obesity an independent risk factor for nocturia.
Can menopause make you pee more at night?
Yes, it can contribute. The Canadian Urological Association notes that hormone treatment may help with menopause-related nocturia, and it lists treating hot flashes as one way to protect sleep after menopause. A Cochrane review of 34 trials found that vaginal estrogen led to about one to two fewer trips to the bathroom in 24 hours.
That Cochrane result comes from women with urinary incontinence, so it may not apply to everyone. The same review found that oral estrogen tablets made incontinence worse (risk ratio 1.32). Whether any hormone treatment makes sense for you is a decision to make with your doctor.
Could sleep apnea be the reason I keep waking up to pee?
Possibly, and it is easy to miss. The Canadian Urological Association recommends that everyone with nocturia be screened for obstructive sleep apnea. In sleep-clinic patients, nocturia predicted sleep apnea about as well as snoring did (84% vs 83%). A 2015 review found that treating apnea with CPAP reduced night-time trips.
Loud snoring, gasping at night, morning headaches and daytime sleepiness are worth mentioning to your doctor.
What can you do to pee less at night?
Start with simple habits: stop drinking about 2 hours before bed, cut caffeine and alcohol, and put your feet up in the evening. The Canadian Urological Association recommends these conservative steps first, with a strong recommendation and moderate-quality evidence. They cost nothing, and you can try them tonight.
- No drinks for 2 hours before bed. Sip during the day instead.
- About 2 liters of fluid a day in total, or 25% less than usual if you tend to drink a lot. Check with your doctor first if you have heart or kidney disease.
- Limit caffeine and alcohol, especially after lunch. Caffeine has been linked to nocturia.
- Watch the salt and evening protein. The report suggests normal salt intake and less protein at dinner.
- Put your legs up for 1 to 3 hours before bed with your legs above heart level if your ankles swell. Compression stockings can also help.
- Empty your bladder right before bed. Going to sleep with a fuller bladder makes a night trip more likely.
- Try bladder training and pelvic floor exercises. The report says pelvic floor training may reduce overactive-bladder symptoms, including nocturia. Our guide to pelvic floor exercises for women over 50 shows how to start.
- Protect your sleep. A calm bedtime routine and less screen time before bed can make it easier to fall back asleep.
How do doctors find the cause?
They usually start with a bladder diary, a urine test and a few questions. The Canadian Urological Association recommends a frequency-volume chart, which is a record of what you drink and when you urinate, along with a urinalysis and a check of how well your bladder empties. Women also get a pelvic exam to look for vaginal atrophy or prolapse.
A urine test can also show whether an infection is involved. If you're prone to bladder infections, our review of one women's probiotic looks at what the label and the research show, but a supplement is not a treatment for an active infection.
Are there medicines for nocturia?
Yes, but they're usually a later step, not a first one. Desmopressin can reduce night-time urine production, and the Canadian Urological Association reserves it for cases that persist after the causes have been treated. Its main risk is low blood sodium, which is more likely in women and in people over 65, so blood tests are needed.
If you take a diuretic or another medicine that may increase urine, ask your doctor whether the timing can be adjusted. Don't stop or change a prescription on your own.
See a doctor if you notice…
- You wake up twice or more every night, or your sleep and daytime energy suffer
- Burning when you pee, fever, or pain in your back or side (possible urinary tract infection)
- Blood in your urine
- Swollen ankles or legs, or shortness of breath when lying down
- Extreme thirst with a lot of urine day and night (possible diabetes)
- Loud snoring, gasping at night or heavy daytime sleepiness
- A bulge or heaviness in the vagina
Keep reading
Frequently asked questions
How many times a night is it normal for a woman to pee?
Once is very common and usually not a problem. The International Continence Society counts waking to urinate even one time as nocturia, but a 2022 Canadian Urological Association report notes that some research finds fewer than two trips a night does not bother most people. Two or more trips is when to look for a cause.
Is it normal to pee every 2 hours at night?
No, waking every two hours to urinate is not typical, and it is worth a visit to your doctor. Three or four trips a night can come from evening drinks, a small bladder capacity, sleep apnea or a medical condition. A simple bladder diary, which the Canadian Urological Association recommends, helps your doctor find which one.
Why do I pee so much at night even when I don't drink?
Fluids are not the only cause. Your body can make extra urine at night because of leg swelling, sleep apnea, heart, kidney or blood sugar problems, or certain medicines, according to the Canadian Urological Association. An overactive bladder can also send urgent signals even when little urine is there. A doctor can sort out which applies.
Will drinking less water stop me from peeing at night?
Cutting back in the evening can help, but drinking far less all day is not the answer. The Canadian Urological Association suggests no fluids for two hours before bed and about 2 liters a day in total. Ask your doctor first if you have heart or kidney disease.
Does caffeine make you pee more at night?
Yes, it can. Caffeine has been linked to nocturia, and the Canadian Urological Association explains that it acts as a diuretic while also making the bladder muscle contract more. Alcohol works in a similar way. Cutting both out in the afternoon and evening is a low-effort first step before trying anything else.
Sources
- Nguyen LN, Randhawa H, Nadeau G, et al. Canadian Urological Association best practice report: Diagnosis and management of nocturia. Canadian Urological Association Journal. 2022;16(7):E336-E349. doi:10.5489/cuaj.7970.
- Bosch JLHR, Weiss JP. The prevalence and causes of nocturia. Journal of Urology. 2010;184(2):440-446. doi:10.1016/j.juro.2010.04.011.
- Cody JD, Jacobs ML, Richardson K, Moehrer B, Hextall A. Oestrogen therapy for urinary incontinence in post-menopausal women. Cochrane Database of Systematic Reviews. 2012;10:CD001405. doi:10.1002/14651858.CD001405.pub3. PMID 23076892.
Claire Donovan
I'm Claire Donovan, a 47-year-old woman who became much more interested in women's health after experiencing some of my own challenges with pelvic and urinary health.
I'm not a doctor or healthcare professional. I'm simply someone who has spent years researching these subjects, comparing information, reading scientific research, and looking for reliable answers from trusted and official sources.
My goal is simple: to make reliable information easier to understand and help women feel more informed about their own health. More about me.
Last updated: . Every figure was checked against the sources listed above on this date.
How this guide was made: it is based on a national urology association guideline report, a systematic review of prevalence studies and a Cochrane review, explained in plain language.
Medical note: this guide is general information and isn't medical advice. Medical disclaimer.