--- title: "Evidence: deep-pressure stimulation" description: "Weighted blankets effectively reduce insomnia and improve daytime symptoms and activity in individuals with certain psychiatric disorders." url: "https://magellanlongevity.com/study/s177.md" canonical: "https://magellanlongevity.com/study/s177.html" html: "https://magellanlongevity.com/study/s177.html" type: "study" study_key: "s177" journal: "J Clin Sleep Med" year: 2020 pmid: "32536366" doi: "10.5664/jcsm.8636" citations: 1 updated: 2026-09-02 author: "Gabriel Radu, DO" author_credentials: "Physiatrist (PM&R). NY medical license 275110. NPI 1376861765." publisher: "Magellan Longevity" content_format: "markdown" --- # Evidence: deep-pressure stimulation [Home](https://magellanlongevity.com/) › [Research map](https://magellanlongevity.com/longevity-research-map.html) › Evidence: deep-pressure stimulation **HTML version:** https://magellanlongevity.com/study/s177.html · **In the Magellan app:** https://magellanlongevity.com/#/study/s177 ## Citation | Field | Value | | --- | --- | | Journal | J Clin Sleep Med | | Year | 2020 | | PMID | [32536366](https://pubmed.ncbi.nlm.nih.gov/32536366/) | | DOI | [10.5664/jcsm.8636](https://doi.org/10.5664/jcsm.8636) | | Study key | s177 | ## Takeaway Weighted blankets effectively reduce insomnia and improve daytime symptoms and activity in individuals with certain psychiatric disorders. ## The question What is the effect of weighted chain blankets on insomnia and sleep-related daytime symptoms in patients with major depressive disorder, bipolar disorder, generalized anxiety disorder, and attention deficit hyperactivity disorder? ## Hypothesis The study hypothesized that weighted chain blankets would improve insomnia and sleep-related daytime symptoms in the target patient population. ## Methods One hundred twenty patients were randomized (1:1) to either a weighted metal chain blanket or a light plastic chain blanket for 4 weeks. The primary outcome was the Insomnia Severity Index, with secondary outcomes including day and night diaries, Fatigue Symptom Inventory, Hospital Anxiety and Depression Scale, and wrist actigraphy for sleep and daytime activity levels. A 12-month open follow-up phase was also conducted. ## Results At 4 weeks, the weighted blanket group showed a significant advantage in Insomnia Severity Index ratings compared to the light blanket group (P < .001) with a large effect size (Cohen's d 1.90). The weighted blanket also led to better sleep maintenance, higher daytime activity, and reduced daytime fatigue, depression, and anxiety. No serious adverse events were reported. During the 12-month follow-up, the positive effects on sleep were maintained by continuous users, and those who switched from a light to a weighted blanket experienced similar improvements. ## Conclusion Weighted chain blankets are an effective and safe intervention for insomnia in patients with major depressive disorder, bipolar disorder, generalized anxiety disorder, or attention deficit hyperactivity disorder, also improving daytime symptoms and activity levels. ## Limitations The abstract does not explicitly state any limitations of the study. ## Verbatim from the abstract > weighted blankets are an effective and safe intervention for insomnia ## Where this study is used on Magellan This paper is one of the citations behind the evidence grade on the pages below. Grades are assigned from the published research and are independent of affiliate commissions. | Compound or device | Evidence grade | Graded pages | | --- | --- | --- | | Weighted Sleep Blanket Pro | Moderate evidence | [Weighted Sleep Blanket Pro](https://magellanlongevity.com/p/177.md) | ## Reference 1. **Evidence: deep-pressure stimulation** J Clin Sleep Med 2020 · [PMID 32536366](https://pubmed.ncbi.nlm.nih.gov/32536366/) · [DOI 10.5664/jcsm.8636](https://doi.org/10.5664/jcsm.8636) > weighted blankets are an effective and safe intervention for insomnia ## Structured data ```json {"@context":"https://schema.org","@graph":[{"@type":"MedicalWebPage","@id":"https://magellanlongevity.com/study/s177.html#page","url":"https://magellanlongevity.com/study/s177.html","name":"Evidence: deep-pressure stimulation","description":"Weighted blankets effectively reduce insomnia and improve daytime symptoms and activity in individuals with certain psychiatric disorders.","inLanguage":"en","isPartOf":{"@type":"WebSite","name":"Magellan Longevity","url":"https://magellanlongevity.com/"},"author":{"@type":"Person","name":"Gabriel Radu, DO","jobTitle":"Physiatrist (PM&R)","identifier":[{"@type":"PropertyValue","name":"NPI","value":"1376861765"},{"@type":"PropertyValue","name":"NY medical license","value":"275110"}]},"publisher":{"@type":"Organization","name":"Magellan Longevity","url":"https://magellanlongevity.com/"},"encoding":{"@type":"MediaObject","encodingFormat":"text/markdown","contentUrl":"https://magellanlongevity.com/study/s177.md"},"dateModified":"2026-09-02"},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://magellanlongevity.com/"},{"@type":"ListItem","position":2,"name":"Research map","item":"https://magellanlongevity.com/longevity-research-map.html"},{"@type":"ListItem","position":3,"name":"Evidence: deep-pressure stimulation","item":"https://magellanlongevity.com/study/s177.html"}]},{"@type":"ScholarlyArticle","@id":"https://magellanlongevity.com/study/s177.html#study","name":"Evidence: deep-pressure stimulation","headline":"Evidence: deep-pressure stimulation","datePublished":"2020","isPartOf":{"@type":"Periodical","name":"J Clin Sleep Med"},"identifier":"PMID:32536366","url":"https://pubmed.ncbi.nlm.nih.gov/32536366/","sameAs":"https://doi.org/10.5664/jcsm.8636","abstract":"Weighted blankets effectively reduce insomnia and improve daytime symptoms and activity in individuals with certain psychiatric disorders."}]} ``` ## Related on Magellan Longevity - [Weighted Sleep Blanket Pro](https://magellanlongevity.com/p/177.md) — product graded on this and related evidence - [Safety and effectiveness of weighted blankets for symptom management in mental…](https://magellanlongevity.com/study/d39447684.md) - [Longevity research map](https://magellanlongevity.com/longevity-research-map.html) - [Evidence-based longevity supplements](https://magellanlongevity.com/longevity-supplements.md) ## Scope and disclosures Educational information, not medical advice. Nothing here is intended to diagnose, treat, cure, or prevent any disease. Talk to your physician before starting any supplement or device, especially if you are pregnant, nursing, or taking medication. Editorial firewall: evidence grades are assigned from the published research and are independent of any affiliate commission. As an Amazon Associate, Magellan Longevity earns from qualifying purchases. Reviewed for accuracy by a board-certified physician (DO).