Written by the Nuvirox Research Team
Key Points
- One study found the incidence of sleep disturbance within 2 days after surgery can reach over 90%.
- A large longitudinal study found surgery was associated with a more than 12-fold higher odds of new-onset insomnia in the following 30 days.
- Postoperative insomnia tends to resolve faster than non-surgical insomnia, according to the same study.
Short answer: postoperative sleep disruption is extremely common — not a sign that something unusual is happening to you — and it typically resolves faster than insomnia that develops for other reasons.
How common is trouble sleeping after surgery, really?
Very common. A cross-sectional study using the Pittsburgh Sleep Quality Index found sleep disturbance in 65.2% of cancer patients after elective surgery. Another study, surveying patients on their second postoperative day, cited research showing incidence of sleep disturbance within 2 days after surgery reaching over 90%. A separate review of arthroscopic hip surgery patients found insomnia diagnoses rose from 8.8% before surgery to 17.8% after — roughly doubling.
A large longitudinal, population-based case-crossover study looked at this from a different angle: comparing insomnia diagnosis rates in the 30 days following surgery to a comparison period. It found more than a 12-fold higher incidence of new-onset insomnia associated with preceding surgery (odds ratio 12.05, p<0.001).
What actually causes it — is it just pain?
Pain is a major factor, but not the only one — and it overlaps with why pain keeps people awake at night more generally. Research on cancer surgery patients found moderate-to-severe postoperative pain, postoperative anxiety, preoperative sleep disturbance, and hospital ward noise were all independent predictors of sleep disturbance after surgery. A review of perioperative sleep disorders adds that hospital-related environmental factors — noise, lighting, confined spaces — contribute significantly, since inappropriate light exposure can suppress melatonin secretion and stimulate the sympathetic nervous system.
General anesthesia itself appears to play a smaller role than commonly assumed. The population-based study cited above concluded that "general anesthesia per se may not be an important pathogenic factor for postoperative insomnia," based partly on findings that anesthesia alone, without surgery, produces only minimal sleep disturbance in healthy volunteers.
Is the good news real — does it actually get better faster than regular insomnia?
Yes, according to the population-based case-crossover study, which is the most direct comparison available. Postoperative insomnia had a shorter average duration of hypnotic medication use and a nearly 2-fold faster remission rate compared with insomnia that developed without a preceding surgery. That said, roughly a quarter of people in both the postoperative and non-postoperative insomnia groups went on to develop persistent sleep disturbance — so "usually resolves faster" isn't the same as "always resolves."
When to See a Doctor
If you're on prescription pain medication, blood thinners, sedatives, or other medications during recovery, talk to your surgical team or pharmacist before adding any sleep supplement, since interactions with recovery medications are a real possibility. Persistent sleep disturbance more than a few weeks after surgery, new breathing pauses during sleep, or sleep problems accompanied by confusion or unusual daytime drowsiness also warrant a call to your surgical team.
What helps, based on the research?
The review of postoperative sleep disorders points to a mix of pharmacological approaches (used under medical supervision, such as dexmedetomidine or short-term hypnotics) and non-pharmacological ones — controlling environmental noise and light, and following enhanced recovery after surgery (ERAS) protocols, which bundle multiple recovery-supporting practices together. The review is careful to note that no single approach has been shown to be clearly superior, and combined strategies are likely needed. If you find yourself waking repeatedly through the night during recovery, the general approaches described in how to fall back asleep after waking up at night can complement your recovery plan.
Does the time of day your surgery happens actually matter for your sleep afterward?
There's at least preliminary evidence that it might. The population-based case-crossover study cited above notes that a separate study found operations performed under general anesthesia in the evening were associated with a greater degree of postoperative sleep disturbance than those performed in the morning — though the same research is careful to point out that general anesthesia by itself, tested in nonsurgical volunteers for three hours, produced only minimal sleep disturbance, reinforcing that surgery itself (rather than anesthesia exposure alone) is doing most of the work in disrupting sleep afterward.
It's also worth knowing that hospitalization itself, independent of surgery, is associated with new-onset insomnia: research cited in a study of postoperative cancer patients found that 36% of hospitalized patients reported new-onset insomnia, with 10% meeting criteria for clinical insomnia. That means some of what feels like "surgery insomnia" may really be "being in a hospital" insomnia — environmental noise, lighting, and unfamiliar surroundings contribute on their own, separate from the surgical procedure itself, which is consistent with why controlling the hospital environment specifically shows up as a recommended intervention in this research.
Frequently asked questions
Is it normal to barely sleep the first night or two after surgery?
Yes — multiple studies put the incidence of sleep disturbance in the first 48 hours after surgery above 90% in some samples, so this is closer to the norm than the exception.
Does the type of surgery matter for how much it affects sleep?
Yes, research shows incidence varies by surgery type and can persist to different degrees — for example, one study found 49.7% of lung cancer surgery patients still had sleep disturbance a full year later, while sleep quality improved for some other surgery types like rotator cuff repair.
Will my sleep go back to normal once I've recovered?
For most people, yes, and generally faster than non-surgical insomnia based on the case-crossover data above — though about a quarter of people in that study developed longer-lasting sleep disturbance, so it's worth monitoring rather than assuming it will resolve on its own indefinitely.
Does the type of anesthesia or surgery I have change any of this?
Incidence and duration do appear to vary by surgery type — the research above found insomnia rates roughly doubling after arthroscopic hip surgery but improving after some other procedures like rotator cuff repair, and evening-scheduled operations were linked to more sleep disturbance than morning ones in at least one study, so your specific procedure and its timing may be worth discussing with your surgical team.
From Nuvirox
Why we formulated Sleep+ Restore
Sleep+ Restore pairs 10 mg of melatonin with a 905 mg blend of calming botanicals and amino acids — L-tryptophan, L-theanine, chamomile, passionflower, ashwagandha, GABA, and 5-HTP among others — studied individually for supporting relaxation and sleep onset. It is backed by a 60-day money-back guarantee, long enough to actually evaluate it the way sleep research suggests you should.
Because recovery from surgery often involves prescription medications, please check with your surgical team or pharmacist before adding Sleep+ Restore or any other supplement during your recovery period.
The bottom line
Struggling to sleep after surgery is close to universal in the first days, driven by a mix of pain, stress, hospital environment, and to a lesser degree anesthesia itself — and the encouraging finding across the research is that it tends to resolve faster than insomnia unrelated to surgery, even though a meaningful minority of people do go on to develop longer-term sleep disturbance worth flagging to a doctor.
References
- Rampes S, Ma K, Divecha YA, Alam A, Ma D. Postoperative sleep disorders and their potential impacts on surgical outcomes. PMC7386412.
- The risk of insomnia after surgical operation: A longitudinal, population-based, case-crossover study. J Chin Med Assoc. 2022.
- The incidence of postoperative sleep disturbance and its influencing factors in cancer patients. PMC13001766.
- Latent profiles and determinants of postoperative sleep quality in elective surgery patients. Sci Rep. 2025. doi:10.1038/s41598-024-84896-x.
*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.