CBT-I: What It Is and Why It Is First Line
Cognitive behavioural therapy for insomnia is the best-supported treatment for persistent insomnia, and it is something you get from a professional rather than something you assemble yourself.
Research consistently shows that cognitive behavioural therapy for insomnia produces large, durable improvements in insomnia severity and sleep continuity. A meta-analysis of eighty-seven randomized trials found large effects on insomnia severity and moderate effects on sleep efficiency and time awake after falling asleep, with the smallest effect on total sleep time. Benefits persist for one to two years after treatment ends, and CBT-I matches medication in the long term without the relapse that follows stopping a drug. Professional bodies conclude that no intervention is clearly superior to it. It is a structured programme delivered by a trained clinician, usually over four to eight sessions, and it is described here so you know what to ask for.
- Misconception: 'Sleeping pills are the main option.' CBT-I matches medication long term and does not relapse on discontinuation.
- Misconception: 'CBT-I is just sleep hygiene.' Sleep-hygiene education alone performs substantially worse in head-to-head trials.
- Misconception: 'I can do it myself from an article.' Its active components include sleep restriction, which is titrated by a clinician.
- This block does not deliver, teach or approximate CBT-I
- Does not diagnose insomnia or any sleep disorder
- Does not advise on starting, changing or stopping any medication
- Difficulty falling or staying asleep at least three nights a week for three months or more → clinician or sleep specialist for CBT-I
- Daytime sleepiness severe enough to affect driving or safety → clinician promptly
- Loud snoring with witnessed pauses in breathing → clinician, for possible sleep apnoea, which CBT-I does not treat
- Insomnia alongside persistent low mood or thoughts of self-harm → clinician or mental-health professional; in crisis call or text 988
Every source below carries its own grade and links to the original study. This is the audit trail.