Women should aim for 7 to 9 hours of sleep per night, the same general recommendation that applies to all adults. But women tend to need slightly more sleep than men, and they face more biological disruptions that make hitting that target harder. On average, women sleep about 11 minutes more per night than men, a small number that reflects real physiological differences in how female bodies regulate rest.
Why Women Often Need More Sleep
The reason women may need a bit more sleep isn’t that their bodies are less efficient. It’s that more things interfere with sleep quality across a woman’s lifespan. Hormonal shifts during the menstrual cycle, pregnancy, breastfeeding, perimenopause, and menopause all disrupt sleep architecture. When sleep is frequently broken or shallow, the body needs more total time in bed to get enough restorative rest.
Women are also twice as likely as men to experience anxiety and depression, both of which are strongly linked to insomnia. And the risk of restless legs syndrome is consistently twice as high in women as in men. These aren’t minor footnotes. CDC data from 2020 found that 17.1% of women had trouble falling asleep most days or every day, compared to 11.7% of men. Similarly, 20.7% of women had trouble staying asleep, versus 14.7% of men.
How Hormones Shape Sleep Across Life Stages
Progesterone is one of the most important hormones for sleep regulation in women. It promotes deeper, more restorative sleep by increasing slow-wave sleep, the phase your body uses for physical repair and memory consolidation. Progesterone peaks during the second half of the menstrual cycle (the luteal phase), which is why some women feel sleepier in the days before their period. But there’s a catch: a rapid rise in progesterone during the early luteal phase can actually increase nighttime wakefulness, meaning you fall asleep fine but wake up more during the night.
When progesterone drops during menstruation, sleep quality often dips with it. Women with irregular menstrual cycles have roughly double the risk of insomnia compared to those with regular cycles. Menstrual pain further compounds the problem, independently worsening sleep quality.
During Pregnancy
Pregnancy reshapes sleep trimester by trimester. In the first trimester, a spike in progesterone can make you feel unusually drowsy during the day. The second trimester often brings some relief. By the third trimester, physical discomfort takes over: a growing belly, pressure on the diaphragm, frequent urination, acid reflux, and restless legs all compete for your ability to stay asleep. High estrogen levels can also cause nasal tissue swelling, leading to snoring or sleep apnea in some women who never had breathing issues before.
Getting fewer than six hours of sleep during pregnancy is linked to higher rates of preeclampsia, gestational diabetes, longer labors, and cesarean delivery. There’s no special pregnancy-specific number, but aiming for the full 7 to 9 hours (and napping when possible) is especially important during this period.
During Menopause
Menopause brings some of the most significant sleep disruptions women face. Falling estrogen and progesterone levels affect sleep directly, not just through hot flashes and night sweats (though those play a major role too). After menopause, women tend to take longer to fall asleep, spend less time in deep sleep, and develop new sleep disorders. Up to 67% of postmenopausal women have obstructive sleep apnea, a rate that matches men’s for the first time in life.
The 7 to 9 hour recommendation still holds during and after menopause, but many women find they need to work harder to protect that window. Cognitive behavioral therapy for insomnia (CBT-I) is the most effective treatment for chronic sleep problems during menopause, typically taking about six weeks to show results. Hormone replacement therapy can also improve sleep both by stabilizing hormone levels and by reducing hot flashes. If you’re waking multiple times to use the bathroom, that’s worth mentioning to a healthcare provider, as it may be treatable.
Women’s Body Clocks Run Slightly Faster
One of the more surprising biological differences: women’s internal clocks run on a slightly shorter cycle than men’s. Research from Harvard found that women’s circadian rhythm averages about 24.09 hours, compared to 24.19 hours in men. That 6-minute gap sounds trivial, but it shifts the entire sleep-wake system. Women’s bodies start releasing melatonin (the hormone that signals sleepiness) about half an hour earlier relative to their sleep schedule than men’s bodies do.
About 35% of women in the study had circadian periods shorter than 24 hours, compared to just 14% of men. This helps explain why women are more likely to be early chronotypes, naturally preferring earlier bedtimes and wake times. It also means women may be more sensitive to late-night schedules, shift work, or staying up past their biological window.
What Happens When Women Don’t Sleep Enough
Chronic short sleep carries health risks for everyone, but research has identified some consequences that hit women particularly hard. A large NIA-funded study tracking women through midlife found that those with persistent insomnia symptoms combined with short sleep duration had a 70% to 75% increased risk of cardiovascular disease events later in life. Even persistent insomnia alone, without notably short sleep, was associated with elevated heart disease risk. Nearly one-quarter of the women in the study experienced persistent insomnia symptoms during midlife.
Short sleep also raises the risk of weight gain, type 2 diabetes, and weakened immune function. For women specifically, the compounding effect of hormonal disruptions makes these risks harder to avoid through willpower alone. Sleep isn’t just about feeling rested the next day. It’s a long-term investment in cardiovascular and metabolic health.
Practical Ways to Protect Your Sleep
The basics apply regardless of age or life stage: go to bed and wake up at the same time every day, keep your bedroom cool and dark, avoid caffeine after lunch, and limit alcohol (which fragments sleep even when it helps you fall asleep initially). Exercise regularly, but not within a few hours of bedtime. Avoid screens and heavy meals in the hour before bed.
If you can’t fall asleep within about 20 minutes, get up and do something quiet in low light until you feel sleepy again. Lying in bed frustrated trains your brain to associate the bed with wakefulness rather than sleep. For women dealing with menstrual-related sleep disruption, tracking your cycle can help you anticipate rough patches and plan accordingly, whether that means adjusting your evening routine or giving yourself permission to sleep a bit longer during the luteal phase.
If sleep problems persist for more than a few weeks, CBT-I has the strongest evidence base of any insomnia treatment and works well across age groups. It’s available in person, in groups, and through online programs, making it more accessible than many people realize.