Written by the Nuvirox Research Team
Key points
- A systematic review found high prevalence of sleep disturbances in bereavement, with grief intensity consistently linked to more severe sleep difficulty.
- A clinical trial secondary analysis found 91% of people with complicated grief reported sleep disturbance on one measure, and 46% reported grief-specific sleep trouble at least three nights a week.
- Sleep problems and grief intensity appear to reinforce each other over time in longitudinal research, which is part of why treating sleep specifically is being studied as a way to support the grieving process.
If sleep has fallen apart since your loss, that is one of the most well-documented, expected parts of grief — not a sign that anything is wrong with you or that you're grieving the "wrong" way. A systematic review of this research area found a consistently high prevalence of sleep disturbance after bereavement, and the connection between how intensely someone is grieving and how disrupted their sleep becomes shows up again and again across different studies.
How common is sleep disruption after a loss?
Very common, and more pronounced than many people expect. A systematic review covering research on sleep disturbances in bereavement found high prevalence of sleep problems generally, with sizeable minorities of bereaved people — sometimes 20 to 30 percentage points more than non-bereaved comparison groups — experiencing meaningful sleep disturbance. A study specifically comparing bereaved and non-bereaved college students found the rate of insomnia was significantly higher in the bereaved group (22%) than in the non-bereaved comparison group (17%), with the difference particularly pronounced for middle insomnia (waking during the night and struggling to fall back asleep).
Study snapshot: sleep disturbance in complicated grief
| Source | Secondary analysis of a randomized clinical trial, n=395 adults with complicated grief |
| Sleep disturbance prevalence | 91% on one measure (QIDS-4); 46% reported grief-specific sleep trouble ≥3 nights/week (PSQI-1) |
| Key finding | Grief severity was significantly associated with sleep disturbance even after accounting for depression and PTSD |
| Treatment note | Sleep improved with treatment; those receiving grief-focused therapy plus medication showed better endpoint sleep than medication alone |
Is this the same for everyone, or does it depend on how the loss happened?
It appears to differ meaningfully by circumstance. Research on prolonged grief disorder (PGD) — a specific, diagnosable pattern of persistent, impairing grief — notes that up to 80% of people with PGD report clinically relevant sleep complaints, and that PGD itself is roughly five times more common among people bereaved by sudden or violent death (such as homicide, suicide, or an accident) than by other causes. This is a meaningful, honest distinction: while some degree of sleep disruption after any loss is extremely common and expected, more severe and persistent grief-related sleep problems appear concentrated in circumstances involving sudden, traumatic loss.
Does poor sleep make grief itself harder, or is it just a symptom?
The most recent research points toward a genuinely two-way relationship, not simply sleep being a passive symptom of grief. A cross-lagged panel study of 343 bereaved adults found insomnia symptoms at baseline predicted grief intensity at both 6- and 12-month follow-ups — but grief intensity did not predict later insomnia in that same initial analysis. A follow-up analysis of the same dataset then found the reverse association too: baseline grief intensity predicted the persistence of sleep complaints over time, with insomnia and grief symptom trajectories closely correlated. Together, this body of work suggests sleep and grief can form a mutually reinforcing cycle for some people, rather than sleep simply trailing behind however grief happens to be going.
Does treatment for grief also help sleep, or does sleep need its own separate treatment?
The research here is actively evolving, and it's an honest, open question rather than a settled one. The secondary trial analysis found that grief-focused psychotherapy did improve sleep to some degree, with the combination of grief-focused therapy and medication outperforming medication alone on sleep outcomes — but a broader systematic review specifically notes that grief therapy only partly improves sleep difficulties, and that, to date, no intervention studies have specifically targeted sleep problems in bereaved people as a primary focus. That gap is exactly what's motivating newer research: a registered clinical trial protocol is currently testing whether cognitive behavioral therapy for insomnia (CBT-I), delivered directly to people with both prolonged grief disorder and insomnia, can improve both conditions together, based on the theory that sleep problems may play a causal role in maintaining prolonged grief symptoms.
What actually helps in the meantime?
Given how consistently this research finds sleep disruption to be an expected, common part of bereavement rather than a sign of something going wrong, the most important starting point is simply not adding self-judgment on top of an already difficult experience. Beyond that, the emerging research on CBT-I specifically for grief-related insomnia, along with general grief support, suggests that addressing sleep directly — not just waiting for grief itself to ease — may be worth discussing with a grief counselor or doctor, particularly if sleep disruption feels severe, persistent, or is making daily functioning significantly harder. If disturbing or vivid dreams are part of what you're experiencing, our overview of nightmares and what drives them covers that specific symptom in more depth, and the racing, worry-driven wakefulness some people describe overlaps with anxiety keeping you awake at night more generally.
How long does grief-related sleep disruption typically last?
The systematic review found sleep difficulties are more frequent during the first few months of bereavement, generally declining gradually thereafter — though the timeline varies considerably by individual and by the nature of the loss.
Is it normal to have nightmares or vivid dreams about the person who died?
Sleep disturbances documented in bereavement research include nightmares as one recognized category alongside insomnia, and this is described as a common experience rather than something unusual or concerning on its own.
When should grief-related sleep trouble prompt reaching out for professional support?
If sleep disruption feels severe, isn't gradually easing over time, or is significantly affecting your ability to function, that's worth discussing with a doctor or grief counselor — this is a sensitive topic, and if you're also experiencing thoughts of self-harm, please reach out to a crisis line or mental health professional directly rather than navigating that alone.
From Nuvirox
Why we formulated Sleep+ Restore
Each 2-capsule serving pairs 10 mg of melatonin with a 905 mg blend of L-tryptophan, L-theanine, chamomile, passionflower, GABA, 5-HTP, and ashwagandha — ingredients studied, individually and in combination, for their role in sleep onset and relaxation pathways.
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Learn more about Sleep+ Restore →The bottom line
Disrupted sleep after losing someone is one of the most consistently documented experiences in bereavement research — expected, common, and not a sign that you're grieving incorrectly. The relationship between grief and sleep appears to run in both directions for many people, which is part of why researchers are increasingly exploring whether directly addressing sleep could also ease some of grief's broader burden. If what you're experiencing feels heavier than this describes, that's worth bringing to a grief counselor or doctor rather than carrying alone.
References
- Meadows R, et al. Sleep disturbances in bereavement: A systematic review. PubMed 32505968 / ScienceDirect, 2020.
- Robbins-Welty GA, et al. Impact of Sleep on Complicated Grief Severity and Outcomes. PMC6956727.
- Hardison HG, Neimeyer RA, Lichstein KL. Insomnia and complicated grief symptoms in bereaved college students. PubMed 15802260.
- Kivelä L, et al. Sleepless Longing: Bidirectional Associations Between Sleep Quality and Prolonged Grief in Daily Life After Traumatic Loss. Clinical Psychology & Psychotherapy, 2026. PMC12902202.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. This article is for informational purposes only and is not a substitute for professional medical advice.
If you are having thoughts of suicide or self-harm, please contact the 988 Suicide & Crisis Lifeline (call or text 988 in the US) or your local emergency services. You do not have to navigate this alone.