Short answer: a little, on some measures, and not as a replacement for the treatment doctors recommend first. A new meta-analysis of 16 randomized trials found that wearable devices used to treat insomnia modestly shortened the time it took to fall asleep, but did not significantly improve overall insomnia severity.[1]
First, a note on what was studied. These were devices used as a treatment, such as head-worn devices, filtered-light glasses, neck-worn and ear-worn devices, and wristbands, tested against sham devices, waitlists or usual care.[1]
What the review found
The authors pooled 16 randomized trials with 910 adults who had insomnia. Compared with control conditions:[1]
- Falling asleep got a bit faster. Objective sleep-onset latency (measured by device, not memory) dropped by about 4.5 minutes on average (95% confidence interval -8.38 to -0.67 minutes).[1]
- People felt they slept more efficiently. Self-reported sleep efficiency, the share of time in bed spent asleep, rose by 2.0 percentage points.[1]
- Self-reported sleep time rose about 19 minutes (95% CI 2.98 to 35.24 minutes), but the range of results expected in a future study ran from a loss of about 16 minutes to a gain of about 54 minutes.[1]
- Overall insomnia severity did not significantly improve. On the Insomnia Severity Index, a standard questionnaire, the pooled change was -1.82 points, and the confidence interval (-4.33 to 0.69) included zero.[1]
Put simply, the devices nudged some numbers. They did not clearly change how bad the insomnia was, which is the thing people actually want fixed.
Why to read this with caution
- The results are preliminary. The authors describe the findings as nonconclusive, citing wide prediction intervals, substantial heterogeneity and a limited number of studies.[1]
- Blinding is hard with a device. Most trials had unclear or high risk of bias, and participants who know which device they have can inflate self-reported results. The authors say the true effects on subjective sleep may be smaller than reported.[1]
- This is about treatment devices, not sleep scores. The review does not tell you whether wearing a tracker and watching your score improves your sleep. If tracking itself makes you anxious about sleep, that has a name: orthosomnia.
What doctors recommend first
The review’s authors state plainly that wearables should be treated as affordable add-ons that need more validation, not substitutes for first-line cognitive behavioral therapy for insomnia, or CBT-I.[1] Two clinical guidelines back that up. The American College of Physicians recommends that all adults with chronic insomnia disorder receive CBT-I as the initial treatment (strong recommendation, moderate-quality evidence).[2] The American Academy of Sleep Medicine strongly recommends multicomponent CBT-I, and conditionally suggests stimulus control or sleep restriction therapy as stand-alone options. It conditionally suggests against using sleep hygiene tips alone.[3]
The catch is access. The review notes a shortage of trained CBT-I therapists and high per-session costs, which is the gap digital tools are trying to fill.[1]
What to do with this
- If poor sleep keeps happening and wrecks your days, ask for CBT-I by name. Tell your clinician you want a CBT-I referral or a program they trust. Ask about stimulus control and sleep restriction, the components the AASM guideline names. A plan made only of sleep tips is not what the guideline favors.
- If you are on a sleep medication, do not stop or change it on your own. Bring it up with your clinician when you ask about CBT-I.
- If you still want a device, run it as a short experiment. Pick one, give it a set number of weeks, and judge it by how rested you feel and how your days go, not by a tracker score. Keep it as an add-on to a behavioral plan.
- Lock in the free basics. A steady wake time is a good place to start.
This week, write down your wake time and bedtime for seven days, and bring that log to your next appointment. It gives a clinician something concrete to work with, and it costs nothing. If your tracker has become one more thing to worry about, our post on HRV tracking covers the same trap.
References
[1] Zhu W, Chen M, Guo Y, Zhang B, Luo C. Effectiveness of Wearable Digital Therapeutics in Improving Sleep Outcomes Among Individuals With Insomnia: Systematic Review and Meta-Analysis of Randomized Controlled Trials. J Med Internet Res, 2026;28:e93496. Population: 16 randomized controlled trials, N=910 adults with insomnia; interventions delivered by head-mounted devices, therapeutic filtered-light glasses, neck-worn devices, ear-worn devices and wristbands, versus sham, waitlist, usual care or active control. DOI: https://doi.org/10.2196/93496. Finding as used: objective sleep-onset latency mean difference -4.52 min (95% CI -8.38 to -0.67; prediction interval -9.52 to 0.47); subjective sleep efficiency +2.00% (95% CI 1.90 to 2.11); subjective total sleep time +19.11 min (95% CI 2.98 to 35.24; prediction interval -16.20 to 54.43); Insomnia Severity Index mean difference -1.82 (95% CI -4.33 to 0.69), not significant; authors call the findings preliminary and nonconclusive (wide prediction intervals, substantial heterogeneity, limited study numbers) and say wearables should be viewed as affordable adjunctive tools requiring further validation, not substitutes for first-line cognitive behavioral therapy for insomnia; most trials had unclear or high risk of bias, and lack of blinding may have inflated subjective outcomes; the authors note a shortage of trained CBT-I therapists and high per-session costs. ↑︎
[2] Qaseem A, Kansagara D, Forciea MA, Cooke M, Denberg TD. Management of Chronic Insomnia Disorder in Adults: A Clinical Practice Guideline From the American College of Physicians. Ann Intern Med, 2016;165(2):125-133. Population: guideline for adults with chronic insomnia disorder, based on a systematic review of randomized trials. DOI: https://doi.org/10.7326/M15-2175. Finding as used: ACP recommends that all adult patients receive cognitive behavioral therapy for insomnia (CBT-I) as the initial treatment for chronic insomnia disorder (strong recommendation, moderate-quality evidence). ↑︎
[3] Edinger JD, Arnedt JT, Bertisch SM, Carney CE, et al. Behavioral and psychological treatments for chronic insomnia disorder in adults: an American Academy of Sleep Medicine clinical practice guideline. J Clin Sleep Med, 2021;17(2):255-262. Population: guideline for adults with chronic insomnia disorder, GRADE-based. DOI: https://doi.org/10.5664/jcsm.8986. Finding as used: AASM recommends multicomponent CBT-I (strong); suggests stimulus control and sleep restriction therapy as single-component therapies (conditional); suggests against sleep hygiene as a single-component therapy (conditional). ↑︎
Kurt Greiner
Kurt is a digital strategist and IT professional blending emerging technology with practical application to help businesses and individuals streamline their digital presence. His current work focuses on the intersection of intentional living and technological resilience, exploring how individuals can leverage modern tools to navigate the second half of life with purpose.
Leave a Reply