The Sleep Conversation You Actually Need to Have with Your Doctor
Most people with sleep difficulties have never had a clinical conversation about them. Here is the framework — what the evidence-based interventions actually look like and why the wearable on your wrist may be the last thing you need.
“CBT-I has stronger evidence than any pharmacological intervention or any technology product for producing durable improvements in sleep. The clinical consensus is not contested. The wellness product market has not found a commercial model for communicating it.”
The global market for sleep technology — the wearables, temperature-regulation systems, sophisticated mattresses, sleep-tracking apps — is projected to exceed $47 billion this year. The average adult in the developed world has worse sleep quality than their parents did. These two facts exist in an interesting relationship with each other, and the relationship is worth understanding before the next sleep product purchase.
The clinical framework for addressing sleep difficulty is, by the standards of medical evidence, clearer and more practically useful than the wellness product market would suggest. Cognitive Behavioural Therapy for Insomnia — CBT-I — has stronger evidence than any pharmacological intervention or any technology product for producing durable improvements in sleep in people with chronic insomnia. The evidence for this is not contested; it is the clinical consensus reflected in the guidelines of the American Academy of Sleep Medicine and the NHS.
What CBT-I actually involves: sleep restriction therapy (briefly reducing time in bed to rebuild sleep drive — counterintuitive and effective), stimulus control (using the bed only for sleep, removing all other activities that have conditioned the bed as a site of wakefulness), and cognitive restructuring (addressing the specific beliefs about sleep — that eight hours is required, that a bad night has measurable consequences, that sleep must be controlled — that maintain insomnia's anxious feedback loop).
The conversation most people have not had with their doctor is the diagnostic one: what type of sleep difficulty is this? Insomnia disorder responds to CBT-I. Obstructive sleep apnoea — the cessation of breathing during sleep, which fragments sleep architecture and has significant cardiovascular consequences — is underdiagnosed, especially in women, and requires a sleep study, a diagnosis, and usually a CPAP machine. Circadian rhythm disorders are addressed by light therapy and strategic melatonin use, not by general sleep hygiene advice.
The wearable sleep trackers can, in motivated users with normal sleep, provide useful data about sleep patterns. For people with existing sleep concerns, the evidence suggests they can worsen the anxious engagement with sleep quality that is the primary maintenance mechanism of insomnia. Professor Colin Espie at Oxford has named this orthosomnia: the anxiety about achieving ideal metrics that itself disrupts the sleep you are trying to optimise.
The practical framework: if you have had sleep difficulty for more than three months, on most nights, despite adequate opportunity for sleep, this meets the clinical threshold for insomnia disorder and warrants a conversation with a physician. Online CBT-I programmes — Sleepio (developed by Espie at Oxford), SleepStation — have evidence of efficacy comparable to in-person delivery for many users.
The most useful thing the expensive sleep tracking system can tell you is already available from a simple sleep diary: what time you go to bed, what time you wake, how long it took to fall asleep, how often you woke. The diary costs nothing and produces the information a sleep clinician actually uses to make treatment decisions.
Start there. The £2,000 device is optional.
BY OONA CHANEL
