The Real Reason You Cannot Sleep During Perimenopause Explained

Between 40 percent and 60 percent of women in perimenopause and menopause experience insomnia or other sleep difficulties, yet the problem is still routinely dismissed as an unavoidable part of getting older. With midlife sleep struggles finally breaking into the mainstream thanks to projects like the short film The M Factor, featuring Naomi Watts and Halle Berry, here's what's actually driving it and what works.

Why Does Perimenopause Cause Insomnia?

Perimenopause disrupts sleep through three overlapping hormonal shifts. Estrogen and progesterone both fall, melatonin production drops with age and cortisol, the body's main stress hormone, tends to rise.

Higher levels of estrogen and progesterone promote deeper rest and reduce nighttime awakenings, and their decline can directly and indirectly affect sleep. Lower estrogen also triggers night sweats that fragment rest further. Cortisol can be elevated during this transition, making it harder to fall asleep and to stay asleep once you do. The condition affects 40 percent to 60 percent of women navigating this life stage, but most never receive treatment because the issue is often written off as a normal part of aging.

Why Is Perimenopause Insomnia Getting More Attention Now?

Search interest in menopause-related terms has climbed steadily since 2005, and a wave of celebrity-driven advocacy has pushed midlife health into open conversation.

A peer-reviewed analysis of Google search data points to two decades of unmet informational needs. After watching The M Factor, 80 percent of women viewers said they better understood menopause, 75 percent said they were more likely to consult a doctor and 85 percent felt empowered to talk about it with friends and family. That cultural shift is making it easier for women to seek help for symptoms, including insomnia, that they might once have suffered through in silence.

What Actually Helps Insomnia During Perimenopause?

The strongest evidence-based approach pairs improved sleep hygiene with Cognitive Behavioural Therapy for Insomnia, known as CBT-I, which is considered first-line treatment for chronic insomnia.

Sleep hygiene sets the foundation.

• Keep a consistent bedtime and wake time, even on weekends
• Cool the bedroom to 65 to 68 degrees Fahrenheit
• Choose breathable bedding and moisture-wicking sleepwear
• Limit alcohol, which worsens night sweats and disrupts REM sleep
• Avoid caffeine after early afternoon
• Reduce screen exposure 60 to 90 minutes before bed

CBT-I targets the racing thoughts and middle-of-the-night anxiety that often spike as hormones shift.

"We are designed so that if a lion, tiger, or bear is approaching, our ability to respond to the threat is stronger than our ability to fall back asleep. I don't want to get rid of this hyperarousal system since it's essential for our survival, but I do offer my patients behavioral tools, such as CBT-I, to help them fall back asleep," said Natalie Solomon, PsyD, a clinical psychologist with the Stanford Sleep Health and Insomnia Program.

Which Supplements Help Perimenopausal Sleep Problems?

Low-dose melatonin, magnesium glycinate and black cohosh have the most evidence behind them, but supplements should only be used with medical guidance.

Melatonin at 0.5 to 3 mg can help with sleep-onset trouble. Magnesium glycinate supports muscle relaxation and eases tension. Black cohosh has mixed evidence for reducing hot flashes in some women. Natural does not mean risk-free. Supplements can interact with prescription medications, and anyone with liver conditions or existing prescriptions should talk to a doctor before starting a new product.

When Should You See a Doctor About Midlife Insomnia?

Not all midlife sleep loss is hormonal. See a doctor if you notice symptoms that suggest something other than perimenopause-driven insomnia.

Warning signs to raise with a physician include the following.

• Loud snoring or gasping for air during sleep
• Severe daytime fatigue
• Persistent low mood
• A rapid heart rate
• Unexplained weight changes

Sleep apnea, restless leg syndrome, thyroid disorders and depression all become more common during perimenopause and require different treatment than hormone-related insomnia. A sleep study or blood work may be needed.

"Having both sleep apnea and insomnia is common [for perimenopausal and menopausal women], and it's important to remember that they are two different disorders which have two different treatments. If you are struggling with frequent difficulty falling or staying asleep, you may be experiencing insomnia and would be a good candidate for CBT-I. But, if your sleep difficulty is more about multiple brief awakenings, snoring or non-refreshing sleep, you may want to speak to your doctor about getting a sleep study to test for sleep apnea," Solomon said.

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This story was originally published July 17, 2026 at 10:00 AM.