A shorter insomnia therapy works about as well as the full course

Cognitive behavioural therapy for insomnia is the gold-standard non-drug treatment, but it is long, therapist-intensive and often hard to access. Brief behavioural therapy for insomnia strips the approach down to its core behavioural elements over fewer sessions, which could widen access dramatically if it works as well. Until now, nobody had systematically compared the different ways of delivering the brief version, or set it directly against full CBT-I and other non-drug options. For the many adults who abandon sleep treatment because of the commitment it demands, that comparison matters.

The researchers searched three databases from inception to December 2024 and pooled 18 randomised controlled trials covering 1104 participants with a mean age of 52.6 years. Using a network meta-analysis, they compared brief behavioural therapy delivered in different formats against usual care, cognitive behavioural therapy for insomnia and other non-drug interventions. The primary outcomes were insomnia severity and sleep quality. Secondary outcomes included total sleep time, how long it took to fall asleep, time spent awake after falling asleep, sleep efficiency and daytime sleepiness.

Compared with usual care, brief behavioural therapy reduced insomnia severity and improved sleep quality, with highly consistent results across trials. People fell asleep 19.81 minutes faster on average, spent 15.51 fewer minutes awake during the night, and their sleep efficiency rose by 10.78 percentage points. Total sleep time and daytime sleepiness did not significantly change, so nights became more consolidated rather than longer. Face-to-face delivery ranked as the most effective format and produced outcomes similar to full CBT-I.

This strengthens the case that the active ingredients of insomnia treatment are behavioural: fixing wake times, restricting time in bed and rebuilding the link between bed and sleep. The finding that the brief format matched full CBT-I when delivered face to face suggests the length of the programme is not what makes it work. The null result on total sleep time echoes what full CBT-I trials often show, that quality and consolidation improve before duration does. Open questions include how durable the gains are and whether remote delivery can close the gap on face-to-face formats.

If insomnia has you weighing treatment options, this is evidence that a shorter behavioural programme is not a second-class choice. The gains showed up where insomnia hurts most: falling asleep faster, waking less during the night and spending more of your time in bed actually asleep. It is also a useful recalibration of expectations, since the therapy consolidated sleep rather than lengthening it. For people put off by the demands of a full course, the brief format now has pooled trial evidence behind it.