CBT-I: First-Line Insomnia Treatment Most People Don’t Get

Cognitive behavioral therapy for insomnia (CBT-I) teaches structured skills for changing sleep habits and the thoughts that keep people awake, rather than relying only on general sleep tips.¹¹

A 2026 review of 15 studies found that CBT-I plus medication improved insomnia severity compared with medication alone, while adding medication to CBT-I produced little or no extra improvement on that outcome.¹¹

What CBT-I Involves

Chronic insomnia involves persistent difficulty falling asleep or staying asleep, together with daytime problems such as fatigue, concentration difficulties or mood symptoms.

The diagnostic framework summarized in the 2026 review required these problems at least 3 days a week for at least 3 months, despite an adequate opportunity to sleep.¹¹

CBT-I works on habits and expectations that can sustain insomnia. Its core components include:¹¹

• Stimulus control: rebuilding the association between bed and sleep, rather than lying awake, worrying or using the bedroom for wakeful activities.
• Sleep restriction therapy: adjusting time in bed using the amount of sleep recorded in a diary, then changing that window as sleep becomes more consolidated.
• Cognitive strategies: identifying and testing unhelpful beliefs about sleep, including the pressure to force sleep or the expectation that a poor night guarantees a ruined day.
• Relaxation and scheduled worry: reducing physical tension and moving problem-solving away from bedtime.

These are descriptions of treatment components, not a personal sleep-restriction schedule. A treatment program uses information about the person's sleep and circumstances to guide the changes.

Sleep hygiene covers advice about the sleep environment and habits such as caffeine use. It can be part of CBT-I, but it does not include the full behavioral and cognitive treatment.

The 2026 review summarized the AASM's earlier guidance as strongly recommending multicomponent CBT-I for adults with chronic insomnia and recommending against sleep hygiene as the only treatment. That summary does not mean every book, app or collection of sleep tips delivers equivalent care.¹¹

CBT-I, Medication or Both: Keep the Comparisons Separate

A 2026 AASM systematic review by Buysse et al. evaluated concurrent combination treatment: people received CBT-I and medication during the same treatment period. It examined whether the combination improved outcomes compared with either treatment alone.¹¹

Compared with medication alone, combination treatment improved insomnia severity. The pooled standardized mean difference was −0.67 (95% CI −0.97 to −0.36; 178 participants in this analysis). A standardized mean difference expresses the gap between groups in units that allow different questionnaires to be combined.¹¹

Sleep efficiency, time to fall asleep and time awake during the night also favored combination treatment. These results support the value of including CBT-I rather than relying only on medication; they do not show that medication is necessary for CBT-I to work.¹¹

Compared with CBT-I alone, combination treatment showed little or no difference in insomnia severity. The standardized mean difference was 0.10 (95% CI −0.17 to 0.37; 228 participants). The confidence interval included effects in either direction.¹¹

Adding medication did not meet the review's clinical thresholds for extra improvements in sleep efficiency, sleep onset or nighttime wakefulness. Total sleep time was the exception at the level of the point estimate: 13.81 extra minutes, against a predefined 10-minute threshold.¹¹

That estimate's 95% confidence interval ran from −6.78 to 34.41 minutes, and the review rated the evidence for it low certainty. A promising average estimate is different from a clearly established benefit.

The review also reported higher post-treatment depression symptom scores with combination treatment than with CBT-I alone. This was a questionnaire result, not proof that adding a sleep medication caused a depressive disorder.¹¹

The studies did not settle which treatment should be started first, how to add a treatment after a partial response, or how to taper an existing prescription. Those are separate questions from comparing concurrent treatment groups.

MHD's detailed coverage of the combination-treatment review discusses its individual sleep and daytime outcomes. The review's main comparison should remain distinct from a personal medication decision.

What a Self-Help Book Trial Found

A Norwegian trial by Bjorvatn et al., published online in 2025 and collected in the journal's 2026 volume, compared a 187-page CBT-I book with a sleep-hygiene sheet.

It enrolled 172 adults who had received a prescription for zopiclone or zolpidem from their GP within the previous 6 months.⁸

A total of 125 participants completed the 4–5-month follow-up. The results below describe those respondents; follow-up did not establish that everyone completed the book's treatment program.

Daily hypnotic use moved in a favorable direction with the book. It fell from 25.4% to 18.6%, while the sleep-hygiene group changed from 21.2% to 22.7%. The main test of whether the groups changed differently was uncertain (p = 0.077).⁸

A sensitivity analysis using a different statistical method supported a benefit. Bjorvatn et al. treated that result as supportive rather than definitive. The percentages should not be presented as conclusive proof that the book reduced daily medication use more than the handout.

The proportion above an anxiety-screening threshold fell more with the book. The groups differed on this categorical outcome (p = 0.030), although the effect estimate was very imprecise. The comparison of continuous anxiety scores was not significant (p = 0.066).⁸

Sleep improved in both groups, without a clear difference between them. The interaction tests were not significant for insomnia severity (p = 0.672) or sleep duration (p = 0.270). A sleep-duration improvement within the book group alone did not establish superiority over the handout.

The book's clearest between-group finding was the categorical anxiety result, while its daily-medication result depended on the statistical model. Neither finding established greater improvement in sleep than the handout.

What to Look for in a CBT-I Program

The Norwegian study tested a specific book written for Norwegian-speaking readers. It did not compare that book with a therapist, test every digital program, or establish that a support app is equivalent to a complete course of CBT-I.⁸

When considering a program, ask what it actually provides:

• Does it include structured behavioral and cognitive treatment, or only general sleep tips?
• Does it use a sleep diary and explain how treatment is adjusted?
• What evidence supports that particular program and delivery format?
• What help is available if the instructions are difficult to follow or sleep problems persist?

The book trial used a self-administered intervention, but participants were recruited through GPs and received follow-up contact. It was not evidence that insomnia care always requires no clinician time or that access barriers are only a matter of awareness.⁸

Insomnia can coexist with other sleep disorders and medical or mental health conditions. A clinician can help assess persistent sleep problems and whether a particular treatment format fits the situation.

If you already take prescription sleep medication, discuss any change with the prescriber; these studies do not provide an individual taper schedule.

What the Evidence Does Not Promise

The combination-treatment review found limitations in the number and size of trials, risk of bias, and the precision of several estimates. Certainty differed by outcome; it was not one uniform rating for every benefit or risk.¹¹

Adverse-effect reporting was also incomplete. For the comparison of combination treatment with CBT-I alone, the review found no usable treatment-side-effect data. Missing reports do not establish that a treatment has no downsides.

The self-help trial had a different limitation: 125 of 172 participants returned the follow-up questionnaire, and the number contributing to each outcome varied. Self-reported adherence and questionnaire follow-up are different from verified completion of treatment.⁸

Neither study established a universally best app, a guaranteed response time, or a treatment sequence that fits every person. Those claims require their own evidence.

Practical Questions About CBT-I

Is CBT-I the same as sleep hygiene?

No. CBT-I is a structured treatment that includes behavioral and cognitive strategies. Sleep-hygiene advice can be included, but a handout about caffeine, room temperature and bedtime habits is not the complete treatment.¹¹

Does adding sleep medication make CBT-I work better?

The 2026 review found little or no extra improvement in insomnia severity with concurrent combination treatment compared with CBT-I alone. The possible extra sleep time remained uncertain.

This does not rule out an individual clinical reason for medication, and it is not an instruction to stop an existing prescription.¹¹

Can a book replace a therapist?

The Norwegian trial did not test that comparison. It showed that a particular self-help book produced some encouraging results compared with a sleep-hygiene sheet, with uncertainty on daily medication use and no clear extra sleep benefit.

Its findings cannot establish that all self-help programs match therapist-delivered treatment.⁸

What should I ask before starting?

Ask which parts of CBT-I the program includes, how progress is monitored, and what support is available. Bring up current medication and other sleep or health concerns. A useful treatment plan needs more detail than an instruction to spend less time in bed.