Written by the Nuvirox Research Team
Key Points
- Short answer: yes, strongly linked. Roughly 42% of adults with OCD report insomnia, compared with about 11% in the general population.
- A large network analysis (n=1,046) found compulsive behavior and daytime dysfunction act as 'bridge symptoms' connecting OCD and insomnia.
- Delayed sleep-wake phase disorder — not just difficulty falling asleep — shows up in an estimated 17.6–43.75% of adults with OCD.
A note before you read on: this topic can overlap with symptoms that deserve a clinician's eyes, not just a blog post. If what you're experiencing is new, severe, or paired with other symptoms, please bring it to a doctor rather than trying to self-diagnose from an article. What follows is general, evidence-based information, not personal medical advice.
Short answer: yes, with honest caveats. Obsessive-compulsive disorder and insomnia travel together far more often than chance would predict. Adults with OCD report insomnia at roughly 42%, compared with about 11% in community samples — a gap large enough that researchers now describe the relationship as bidirectional rather than incidental: poor sleep appears to worsen OCD symptoms, and OCD symptoms appear to worsen sleep.
What's actually driving the overlap?
Two mechanisms show up repeatedly in the research. The first is the most intuitive: bedtime compulsions — checking, repeating, ordering, mental rituals — directly delay sleep onset by extending the time it takes to physically get into bed and feel able to stop. The second is less obvious: OCD is strongly associated with a delayed circadian rhythm, sometimes formally diagnosed as delayed sleep-wake phase disorder (DSWPD), in which the body's internal clock runs meaningfully later than a typical schedule.
A 2016 study by Nota, Schubert, and Coles specifically examined how sleep disruption relates to poor response inhibition in people with OCD and repetitive negative thought symptoms — suggesting the relationship isn't just "OCD keeps you up," but that impaired sleep may itself degrade the cognitive control that helps resist compulsions in the first place.
What does 'bridge symptom' actually mean?
A 2025 network analysis in BMC Psychiatry, drawing on 1,046 patients and using the Pittsburgh Sleep Quality Index alongside the Yale-Brown Obsessive-Compulsive Scale, identified specific symptoms that connect the two conditions rather than treating OCD and insomnia as two separate boxes. Compulsive behavior and daytime dysfunction emerged as the strongest bridges between the OCD and insomnia symptom networks, with sleep disturbance, compulsive behavior, and anxiety/panic bridging OCD to anxiety more broadly.
In plain terms: it's not that OCD simply causes insomnia as a side effect. Specific symptoms — the compulsions themselves, and the daytime impairment they cause — sit at the intersection and appear to reinforce both conditions simultaneously.
Study snapshot: National Comorbidity Survey Replication (Cox & Olatunji, 2016)
| Sample | 2,703 nationally representative adults with OCD |
| Finding | Disturbances in sleep initiation, maintenance, early awakening, and daytime sleepiness were linked to significantly higher OCD symptom severity |
| Honest caveat | Cross-sectional design — shows association, not proof that poor sleep causes worse OCD |
The honest counterweight
Not every study agrees on the details. One 2020 study by Coles and colleagues found no measurable difference in bedtimes between people with OCD and healthy controls — a result that complicates the simpler "OCD delays bedtime" story and suggests the relationship may be more about sleep quality and circadian timing than about when someone physically gets into bed. Research on OCD and hypersomnia (oversleeping) is also comparatively thin; one study found people with OCD were about twice as likely to report excessive sleep or daytime napping, but this side of the relationship is far less studied than insomnia.
What actually helps
Exposure and response prevention (ERP) therapy — the frontline evidence-based treatment for OCD — has been shown to also improve associated sleep problems in several of the studies above, likely because it directly targets the bedtime compulsions that delay sleep onset. Standard sleep hygiene measures (consistent wake time, morning light exposure to help anchor a delayed circadian rhythm, limiting late-night rumination) are reasonable complements but are unlikely to resolve the sleep problem on their own if compulsions are the primary driver.
If obsessions and compulsions are new, worsening, or significantly affecting your ability to function, that's a conversation for a mental health professional, not a supplement aisle. Insomnia associated with a psychiatric condition is a different problem than routine, situational sleeplessness, and it deserves a corresponding level of care.
FAQ
Does treating insomnia improve OCD symptoms?
Some evidence points that direction — a 2013 review found that addressing sleep problems may help protect against the onset of co-occurring conditions like depression, but sleep treatment alone is not considered a substitute for OCD-specific therapy.
Is it the intrusive thoughts or the compulsions that disrupt sleep more?
Research by Timpano and colleagues found insomnia symptoms were more strongly associated with obsessions than with compulsive behaviors specifically, though both contribute.
Why does OCD push bedtime later?
The strongest explanation in the current literature is a genuine circadian phase delay — not just "staying up to finish rituals" — documented via actigraphy in several studies, including Coles et al.'s 2020 sleep-timing research.
Is this the same thing as generalized anxiety keeping people up?
It's related but distinct. The research on OCD specifically points to compulsive behaviors and a measurable circadian phase delay as the connecting mechanisms, which is a more specific pattern than the diffuse worry typical of generalized anxiety disorder.
It's also worth being clear about what this research does not say: it doesn't suggest that everyone with occasional bedtime checking (did I lock the door, did I turn off the stove) has clinical OCD, or that ordinary bedtime routines are a red flag. The studies above focus specifically on diagnosed OCD populations, where compulsions are frequent, distressing, and interfere with functioning — a meaningfully different picture from the kind of light double-checking most people do occasionally without it affecting their sleep or daily life.
Related reading: if racing, repetitive thoughts at bedtime sound familiar even without a formal OCD diagnosis, our piece on racing thoughts at night covers the broader mechanism. And because OCD and social anxiety frequently co-occur, it's worth reading how social anxiety disrupts sleep as well. For the 3 a.m. rumination spiral specifically, see why problems feel worse at 3 a.m.
From Nuvirox
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Learn more about Sleep+ Restore →The bottom line
OCD and insomnia aren't just two things that happen to occur in the same person more often than chance — the research increasingly points to specific symptoms, like bedtime compulsions and circadian delay, that connect them directly. If bedtime rituals or a persistently delayed sleep schedule are part of your picture, that's worth raising with a clinician who treats OCD specifically, since improving sleep hygiene alone is unlikely to be the whole answer.
References
- Cox, R. C., & Olatunji, B. O. (2016). Sleep disturbance and obsessive-compulsive symptoms in a nationally representative sample. Analysis of the National Comorbidity Survey Replication (n=2,703).
- Nota, J. A., Schubert, J. R., & Coles, M. E. (2016). Sleep disruption is related to poor response inhibition in individuals with obsessive–compulsive and repetitive negative thought symptoms. Journal of Behavior Therapy and Experimental Psychiatry, 50, 23–32.
- Bridge symptoms of insomnia, obsessive-compulsive symptoms, and depression/anxiety: a network analysis. BMC Psychiatry (2025), n=1,046.
- Coles, M. E., Schubert, J., Stewart, E., Sharkey, K. M., & Deak, M. (2020). Sleep duration and timing in obsessive-compulsive disorder (OCD): Evidence for circadian phase delay. Sleep Medicine, 72, 111–117.
*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.