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Sleep disorders affect 50% of patients with amyotrophic lateral sclerosis in meta-analysisHalf of people with ALS experience sleep disorders

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Key Takeaway
Note that 50% of ALS patients have sleep disorders, with higher prevalence reported in questionnaire-based assessments.

This meta-analysis synthesized data from 2,762 adult patients with clinically diagnosed amyotrophic lateral sclerosis to determine the prevalence of sleep disorders. The analysis found a pooled prevalence of 50% (95% CI, 45-56%) for sleep disorders in this population.

Several associations were analyzed, including age, sex, body mass index (BMI), disease duration, and site of onset. Patients with sleep disorders were significantly older, with a mean difference of 3.72 years (95% CI, 2.39-5.05). No significant associations were found for sex, BMI, disease duration, or site of onset. Furthermore, no significant differences were observed across ICSD-3-TR categories (p = 0.7367).

Methodological differences were noted, as questionnaire-based studies yielded a significantly higher pooled prevalence than polysomnography-based studies (p = 0.0367). The authors note that the higher prevalence in questionnaire-based studies may reflect assessment tool sensitivity. The study highlights a need for large-scale, multicenter prospective studies to clarify mechanisms and clinical implications. Clinical management should consider routine screening and early intervention for sleep issues in ALS patients.

How this fits prior evidence

This meta-analysis addresses a gap in the clinical management of amyotrophic lateral sclerosis by quantifying the prevalence of sleep disorders. While previous coverage has discussed clinical reasoning to differentiate ALS from other conditions and the role of metabolic factors like diabetes as modifiers of risk in neurological disorders, this finding specifically quantifies the high prevalence of sleep issues in the ALS population. It provides a baseline for the prevalence of sleep disorders, which are common in this patient population.

Living with Amyotrophic Lateral Sclerosis (ALS) brings many physical challenges, but sleep problems are a major hurdle that often goes overlooked. A large review of data from over 2,700 patients found that about 50% of people with ALS experience some form of sleep disorder. This high number highlights how common these issues are for people managing this condition.

The data shows that age plays a role in these struggles. Patients who experienced sleep disorders were significantly older, with an average difference of about 3.7 years compared to those without sleep issues. Other factors, like a person's sex, body mass index, how long they have had the disease, or where the disease first started, did not show a clear link to sleep problems.

It is important to note that the way doctors check for sleep issues can change the results. People who answered questions about their sleep were more likely to be identified with a disorder than those who underwent a sleep study. Because this was a review of existing data rather than a new clinical trial, more large-scale studies are needed to understand exactly why these patterns occur and how to best treat them.

What this means for you:
About 50% of people with ALS experience sleep disorders, with older patients being at higher risk.

Common questions

How common are sleep disorders in people with ALS?

About 50% of patients with ALS experience sleep disorders. This high prevalence suggests that sleep issues are a common part of the experience for many people living with this condition.

Does age affect the risk of sleep problems in ALS?

Yes, the data shows a significant link between age and sleep issues. Patients who had sleep disorders were significantly older, with an average difference of 3.72 years compared to those who did not have sleep disorders.

Do other factors like weight or how long someone has had ALS affect sleep?

The study found no significant associations between sleep disorders and a person's sex, body mass index, the length of time they have had the disease, or the site where the disease first began.

Study Details

Study typeMeta analysis
EvidenceLevel 1
PublishedAug 2026
View Original Abstract ↓
BackgroundSleep disorders stand as prevalent non-motor symptoms in individuals with amyotrophic lateral sclerosis (ALS) and may be linked to respiratory muscle weakness, neurodegenerative changes, and disruption of sleep architecture. Existing studies have reported considerable variability in the prevalence of sleep disorders in ALS patients, and findings regarding associated factors remain inconsistent. Therefore, this study intended to integrate the existing evidence through a meta-analysis to further clarify the prevalence of sleep disorders and their clinical relevant factors.MethodsPubMed, Embase, Web of Science, and the Cochrane Library were searched from database inception to January 10, 2026. Cross-sectional, cohort, and case–control studies involving clinically diagnosed adult patients with ALS were included. A random-effects model was used to estimate the pooled prevalence of sleep disorders. Subgroup analyses were performed according to sex, site of onset, age, disease duration, body mass index (BMI), sleep disorder category based on the International Classification of Sleep Disorders, Third Edition, Text Revision (ICSD-3-TR), sleep-related treatment status, and assessment method (polysomnography [PSG] versus questionnaire-based assessment).ResultsA total of 31 studies involving 2,762 patients with ALS were included. The pooled prevalence of sleep disorders was 50% (95% confidence interval [CI], 45–56%). Patients with sleep disorders were significantly older than those without sleep disorders (mean difference [MD] = 3.72 years, 95% CI, 2.39–5.05), whereas no significant associations were observed for sex, body mass index (BMI), disease duration, or site of onset. The prevalence did not differ significantly across the ICSD-3-TR categories (p = 0.7367), whereas questionnaire-based studies yielded a significantly higher pooled prevalence than PSG-based studies (p = 0.0367). Sensitivity analyses confirmed the robustness of the findings.ConclusionApproximately half of ALS patients have sleep disorders. Age may be related to the occurrence of sleep disorders, whereas no substantial relations were identified for sex, BMI, disease duration, or site of onset. Routine screening and early intervention for sleep issues should be strengthened in clinical management. Large-scale, multicenter prospective studies are still needed to further clarify the underlying mechanisms and clinical implications.Systematic review registrationThe publicly accessible registration URL is: https://www.crd.york.ac.uk/PROSPERO/view/CRD420261287352. The systematic review was registered with PROSPERO (registration number: CRD420261287352).
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