Sleep during divorce
Sleep is usually the first casualty and the last thing to come back, and it is the one that quietly makes everything else worse: the negotiating, the parenting, the temper you keep losing. The best-evidenced treatment for chronic insomnia is not a pill and it is not a drink.
Sleep During Separation and Divorce
Sleep is one of the first things separation disrupts, and rumination about the relationship is a specific, measurable driver of that disruption. The strongest treatment, cognitive behavioral therapy for insomnia (CBT-I), works better than sleep medication for most people and doesn’t carry medication’s dependency risk.
People who dwell obsessively on their divorce show worse objectively measured sleep than people who process it more lightly, even when both groups are equally distressed.
Reported consistently, not settled
In a study of 138 recently separated adults tracked over five months using wearable sleep-tracking devices (actigraphy), researchers found that ‘psychological overinvolvement’ with the relationship, measured through how people talked about their divorce, was linked to lower sleep efficiency at the level of stable individual differences, not just from night to night. People who ruminated more about their ex or the relationship’s end were the ones at greatest risk for ongoing sleep disturbance.
For chronic insomnia, the American College of Physicians recommends therapy, not medication, as the first treatment every adult should try.
The ACP’s clinical practice guideline gives a strong recommendation, based on moderate-quality evidence, that all adults with chronic insomnia receive cognitive behavioral therapy for insomnia (CBT-I) before medication. Only if CBT-I alone doesn’t work does the guideline suggest a shared discussion with a clinician about adding short-term medication, weighing its benefits, harms, and cost.
CBT-I works by retraining the behaviors and thoughts that keep insomnia going, not by sedating you, which is why its benefits tend to last after treatment ends.
CBT-I typically combines stimulus control (only using the bed for sleep), sleep restriction (temporarily limiting time in bed to rebuild sleep pressure), cognitive restructuring around anxious thoughts about not sleeping, and relaxation training, usually delivered over several sessions with a trained clinician or through a structured self-guided program. Because it addresses the underlying pattern rather than just suppressing wakefulness for one night, its effects tend to hold up over time in ways medication alone does not.
Sleep problems that persist for more than about ten weeks after a separation are linked to a later rise in blood pressure, not just daytime fatigue.
Reported consistently, not settled
In a study of 138 recently separated adults followed over 7.5 months, poor sleep quality (measured with the Pittsburgh Sleep Quality Index) in the weeks after separation predicted higher systolic and diastolic blood pressure at later visits, even though no such link appeared right away. The effect specifically showed up when sleep problems lasted beyond roughly 10 weeks post-separation, suggesting it’s prolonged, not brief, sleep disruption that carries the physical health risk.
Spending more time with an ex-partner after separation is linked to worse sleep, even accounting for other factors.
Reported consistently, not settled
A study of 122 recently separated adults, using wearable sleep trackers and audio recorders that sampled real-world social behavior, found that more time spent in contact with an ex-partner was associated with lower sleep efficiency between people, independent of overall distress. Higher attachment anxiety and more television watching were also linked to worse sleep, suggesting that specific behaviors after a split, not just how upset someone feels, shape sleep quality.
The leading clinical guideline puts behavioral therapy (CBT-I) first for everyone with chronic insomnia, with medication considered only as a secondary option and via a shared decision about risks and benefits. Sleep medications also carry their own risks (see the medication section), including dependence with some classes.
Qaseem, A., Kansagara, D., Forciea, M. A., et al., 2016, Annals of Internal Medicine, 165(2)
What to actually do
- If you notice yourself replaying arguments or the relationship’s end while lying awake, that rumination pattern is itself linked to worse sleep — a structured worry-journal or ‘thought dump’ before bed, done outside the bedroom, can help interrupt it.
- Look for a CBT-I program before reaching for medication: many are available through licensed sleep psychologists, some health systems, and structured self-guided apps or workbooks that follow the same core techniques (stimulus control, sleep restriction, cognitive restructuring).
- If a clinician does prescribe something short-term, ask specifically whether it’s a benzodiazepine or a benzodiazepine-like drug and what the plan is for stopping it (see the medication section for why this matters).
- One night of bad sleep is normal during a major life stressor and not a sign anything is wrong. Persistent insomnia (most nights, for weeks) is the threshold at which structured treatment is worth pursuing.
Keep reading
- The drink before bed — and what it does to the second half of the night
- Finding a therapist