What exactly is CBT-I, and why is it so effective?
CBT-I is not just about 'sleep hygiene' (like avoiding caffeine or keeping a cool room). It is a structured, multi-component program that targets the thoughts and behaviors that perpetuate insomnia. The core active ingredients, according to a massive 2024 network meta-analysis of 241 trials involving over 31,000 people, are: cognitive restructuring (challenging unhelpful beliefs about sleep), stimulus control (re-associating the bed with sleep, not wakefulness), and sleep restriction (consolidating time in bed to match actual sleep time) [1]. Surprisingly, the same study found that relaxation techniques might actually be counterproductive, and sleep hygiene education alone is not enough to produce remission [1].
The most effective delivery format is in-person, therapist-led sessions, which increased the odds of remission by 83% compared to control conditions [1]. However, for those who cannot access a therapist, digital CBT-I programs (like Somryst or SHUTi) have also proven highly effective. A real-world analysis of 7,216 users of a digital CBT-I program found that 61% achieved a meaningful reduction in insomnia symptoms, and 40% achieved full remission (Insomnia Severity Index score below 8) [10].
How does CBT-I compare to sleeping pills or other therapies?
CBT-I consistently outperforms sleep medications when it comes to long-term results. A 2022 network meta-analysis comparing a digital CBT-I (Somryst) to prescription sleep aids like zolpidem and eszopiclone found that the digital therapy had the highest probability of being the most effective treatment for reducing insomnia severity and achieving remission [9]. The digital CBT-I was associated with a nearly 6-point greater drop on the Insomnia Severity Index compared to placebo, while the medications did not show a statistically significant advantage over placebo for this outcome [3][9].
Compared to other psychological therapies, CBT-I also holds an edge. A 2025 study of 152 adults found that CBT-I increased the chance of treatment response by 2.7 times compared to Acceptance and Commitment Therapy for insomnia (ACT-I) at the end of treatment [2]. However, ACT-I may be a useful alternative for people who do not respond to CBT-I, especially those with high anxiety about sleep, as one pilot study found ACT-I significantly reduced anxiety while CBT-I did not [7].
Does CBT-I work for everyone? What about people with depression, cancer, or migraine?
CBT-I is effective across a wide range of people, including those with other medical conditions. A randomized trial of 47 outpatients with both chronic insomnia and major depression found that adding CBT-I to usual treatment significantly improved insomnia severity (dropping from 20.6 to 12.1 on the Insomnia Severity Index) and also reduced depressive symptoms [6]. Similarly, a study of 96 patients with chronic migraine and insomnia found that a program including CBT led to 85% of patients achieving a clinical improvement in insomnia at 18 months, compared to only 38% in the standard treatment group [4].
Even cancer patients, who suffer from insomnia at three times the rate of the general population, benefit. A retrospective study of 18 cancer patients found that after an average of 5 CBT-I sessions, the number of nightly awakenings dropped from 3 to 2, and 78% reported improved sleep quality [8]. However, one factor that moderates success is your chronotype (whether you are a 'morning person' or 'evening person'). A large study of 1,721 participants found that while digital CBT-I helped all chronotypes, morning and intermediate types saw greater improvements in insomnia severity than evening types [5].
Adherence is key. The same 2025 study that found CBT-I outperformed ACT-I also reported that patients who adhered to the treatment were 3 times more likely to respond [2]. So, while CBT-I is broadly effective, your commitment to the process—like keeping a sleep diary and following the sleep restriction schedule—is a major predictor of success.
Sources used in this answer
Components and Delivery Formats of Cognitive Behavioral Therapy for Chronic Insomnia in Adults
A 2024 network meta-analysis of 241 trials (31,452 participants) found that the most effective CBT-I packages include cognitive restructuring, sleep restriction, and stimulus control delivered in person, while relaxation may be counterproductive and sleep hygiene education alone is insufficient.
Cognitive and psychological factors associated with treatment response in ACT-I and CBT-I for insomnia.
A 2025 study of 152 adults found CBT-I increased the odds of treatment response by 2.7 times compared to ACT-I, and higher treatment adherence tripled the odds of response.
Comparative Effectiveness of an FDA-Authorized Digital Therapeutic to Medications and Cognitive Behavioral Therapy Treating Chronic Insomnia in Adults
A 2022 network meta-analysis found that a digital CBT-I (Somryst) produced a 5.77-point greater drop in Insomnia Severity Index (ISI) than placebo, outperforming both face-to-face CBT-I and medications.
Cognitive behavioral therapy in the treatment of patients with chronic migraine and concomitant chronic insomnia: a prospective, randomized trial
A 2024 trial of 96 patients with chronic migraine and insomnia found that 85% of those receiving CBT achieved clinical improvement in insomnia at 18 months, versus 38% in the standard care group.
Digital cognitive behaviour therapy for insomnia (dCBT‐I): Chronotype moderation on intervention outcomes
A 2022 study of 1,721 participants found that digital CBT-I improved insomnia for all chronotypes, but morning and intermediate types showed significantly greater improvement than evening types.
Cognitive Behavioral Therapy for Chronic Insomnia in Outpatients with Major Depression—A Randomised Controlled Trial
A 2022 randomized trial of 47 outpatients with major depression and insomnia found that CBT-I significantly reduced insomnia severity (ISI from 20.6 to 12.1) and wake after sleep onset, and improved sleep efficiency.
Comparison of Acceptance and Commitment Therapy (ACT) and Cognitive Behavior Therapy (CBT) for Chronic Insomnia: A Pilot Randomized Controlled Trial
A 2023 pilot trial of 30 patients found that both ACT and CBT-I improved sleep, but only ACT significantly reduced anxiety related to insomnia.
Improving sleep outcomes in patients with cancer with chronic insomnia using cognitive behavioral therapy: A retrospective study.
A 2024 retrospective study of 18 cancer patients found that after an average of 5 CBT-I sessions, nightly awakenings decreased from 3 to 2, and 78% reported improved sleep quality.
Network meta-analysis comparing the effectiveness of a prescription digital therapeutic for chronic insomnia to medications and face-to-face cognitive behavioral therapy in adults.
A 2022 network meta-analysis found that a digital CBT-I (Somryst) had the highest probability of being the most effective treatment for reducing ISI score and achieving remission, outperforming face-to-face CBT-I and prescription medications.
Real-world evidence from users of a behavioral digital therapeutic for chronic insomnia
A 2022 real-world study of 7,216 digital CBT-I users found that 61% achieved a meaningful treatment response and 40% achieved remission, with moderate-to-large effect sizes for sleep onset latency and wake after sleep onset.