Insomnia during perimenopause is common, persistent, and routinely misunderstood. Most advice focuses on managing the physical symptoms — night sweats, hot flashes, temperature dysregulation. These are real and worth addressing. But for many perimenopausal women, the insomnia continues long after the physical symptoms ease. This is because perimenopause does not just disrupt sleep biologically. It frequently triggers a secondary, psychological insomnia that then runs independently of hormonal fluctuations.123
This page explains both layers, why evidence-based psychological treatment (specifically CBT-I and ACT-I) is recommended as first-line for perimenopausal insomnia, and what working with a UK-based insomnia therapist looks like.
Why perimenopause disrupts sleep: the two layers
Layer 1: Biological disruption
Perimenopause — typically occurring in the mid-to-late 40s, though often starting earlier — involves fluctuating and declining oestrogen and progesterone levels. 2 The sleep effects are direct:
Hot flashes and night sweats are the most recognised disruptor. Core body temperature regulation becomes less stable, and nighttime hot flashes wake the brain from sleep. Each awakening is a genuine biological event, not anxiety.
Progesterone decline reduces the calming, GABAergic effect that progesterone has on the brain. Sleep becomes lighter, and the transition into deeper sleep stages is less reliable. This is normal but can combine with other factors to make everything harder.
Circadian rhythm changes in midlife women make the sleep-wake cycle more fragile, with increased early morning waking being common.
Mood and anxiety changes driven by hormonal fluctuation can increase overall arousal levels, making sleep onset harder independently of hot flashes.
These are real, measurable biological changes. Managing them — through lifestyle adaptation, and in some cases hormone replacement therapy (HRT) or non-hormonal medical treatments — is a legitimate first step. A discussion of HRT and its sleep effects is worth having with your GP or gynaecologist.
Layer 2: Conditioned insomnia
Here is what the guidance on hormone management tends not to address:
After weeks or months of disrupted sleep, the brain adapts. It begins associating bed with wakefulness, associates night-time with a threat state, and develops conditioned arousal that is no longer dependent on the original biological trigger.
This is exactly how chronic insomnia develops in any context — and perimenopause is a common precipitating trigger. The hot flashes create the initial disruption. The anxiety about the disruption, the altered sleep habits developed to cope, and the hyperarousal the brain learns create a secondary insomnia that persists even when hot flashes reduce.
When this happens, addressing hormones alone is not enough. The insomnia has developed its own psychological mechanisms — and these are what CBT-I and ACT-I are specifically designed to treat. 46
What the evidence recommends
The American College of Physicians, UK NICE guidelines, and the British Sleep Society all identify Cognitive Behavioural Therapy for Insomnia (CBT-I) as the recommended first-line treatment for chronic insomnia in adults — including perimenopausal women.
A 2019 systematic review and meta-analysis in Menopause (the journal of The Menopause Society) found CBT-I significantly improved sleep in perimenopausal and postmenopausal women, with effects maintained at follow-up. CBT-I outperformed sleep hygiene education alone.
ACT-I evidence for perimenopausal insomnia specifically is still emerging, but the general ACT-I evidence base — including a 2023 RCT comparing ACT-I directly to CBT-I 4– shows equivalent long-term outcomes for reducing insomnia severity. For women whose perimenopause insomnia has a strong anxiety and hyperarousal component (very common given the uncertainty and life-stage transitions perimenopause involves), ACT-I’s psychological flexibility approach is particularly relevant.
HRT is not a first-line treatment for insomnia specifically. It can help by reducing hot flashes that are disrupting sleep, but it does not treat conditioned insomnia or sleep-related anxiety. The combination of HRT (where appropriate) to address biological symptoms plus CBT-I or ACT-I to address psychological mechanisms is a well-supported integrated approach. 3
CBT-I for perimenopause insomnia: what it does
CBT-I for perimenopause insomnia follows the same core protocol as CBT-I for general chronic insomnia, adapted to the specific context:1
Sleep restriction and compression rebuilds the sleep drive that has been disrupted by fragmented sleep and compensatory behaviours (extended time in bed, irregular wake times). This is often the most powerful component — and the one that feels hardest initially.
Stimulus control addresses the conditioned arousal that has developed around the bedroom and bedtime. Bed is re-associated with sleep rather than wakefulness and worry.
Cognitive restructuring challenges specific beliefs that commonly develop in perimenopausal insomnia: “I’ll never sleep properly until menopause is over,” “My sleep was permanently damaged by the hot flashes,” “I can’t function on this sleep.”
Sleep hygiene and temperature management — practical strategies specific to perimenopause: room temperature management, sleepwear choices, and timing of alcohol (a common night sweat trigger).
Relapse prevention — particularly important in perimenopause given that hormonal fluctuations continue. Building a resilient sleep system that can absorb occasional difficult nights without triggering the insomnia cycle again.
ACT-I for perimenopause insomnia: the psychological layer
For women whose perimenopause insomnia involves significant sleep anxiety, dread of bedtime, or a sense that sleep has become permanently unreliable, ACT-I addresses the psychological layer directly.1
Perimenopause and the loss of sleep certainty
Many women describe a loss of trust in their sleep that came with perimenopause. Sleep that was once automatic became effortful. This loss of certainty is, in ACT terms, an experience that triggers control behaviour — increased effort to manage, monitor, and produce sleep. That effort is the problem ACT-I is designed to solve.
The values dimension of perimenopause insomnia
Perimenopause coincides with significant life transitions for many women: career changes, children leaving home, ageing parents, relationship changes. Sleep anxiety can become entangled with broader existential concerns. ACT-I’s values work — identifying what matters and committing to action in those areas despite the presence of anxiety — is particularly relevant when insomnia has become intertwined with a larger period of life reassessment.
An integrated approach
In practice, most women with perimenopausal insomnia benefit from both frameworks: CBT-I’s structural, behavioural components to address the conditioned sleep disruption, and ACT-I’s psychological flexibility approach to address the anxiety and loss of trust in sleep. This integration is how I work.
What insomnia treatment during perimenopause looks like
Working with a qualified insomnia therapist during perimenopause typically involves:
- Assessment: Understanding the insomnia history, when it started in relation to perimenopausal symptoms, what coping strategies have been tried, and what the current sleep pattern looks like
- Psychoeducation: Understanding both the biological and psychological mechanisms, and why managing one without the other tends to leave insomnia in place
- Treatment planning: Deciding which elements of CBT-I and ACT-I to prioritise based on the individual presentation
- Structured sessions: Typically 3-8 sessions over 2-12 weeks, online via Zoom and Voxer
- Between-session practice: Building the skills that produce durable change
- Coordination with medical care: If HRT is being considered or already in use, treatment accounts for this without requiring any change to medical management
Working with Tracy
I work with perimenopausal and menopausal women with insomnia regularly. My approach draws on both CBT-I and ACT-I, depending on what each person needs. I understand both the biological and psychological dimensions of perimenopause insomnia and work with the whole picture, not just the sleep hygiene layer.
A free initial call is the starting point — you describe what’s been happening and I explain what I would recommend.
