--- title: "Self-Reported Sleep Duration and Quality and Cardiovascular…" description: "Sleeping more than 8 hours per night is linked to an increased risk of death and cardiovascular problems." url: "https://magellanlongevity.com/study/x19.md" canonical: "https://magellanlongevity.com/study/x19.html" html: "https://magellanlongevity.com/study/x19.html" type: "study" study_key: "x19" journal: "J Am Heart Assoc" year: 2018 pmid: "30371228" doi: "10.1161/JAHA.118.008552" 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" --- # Self-Reported Sleep Duration and Quality and Cardiovascular Disease and Mortality: A Dose-Response Meta-Analysis [Home](https://magellanlongevity.com/) › [Research map](https://magellanlongevity.com/longevity-research-map.html) › Self-Reported Sleep Duration and Quality and… **HTML version:** https://magellanlongevity.com/study/x19.html · **In the Magellan app:** https://magellanlongevity.com/#/study/x19 ## Citation | Field | Value | | --- | --- | | Journal | J Am Heart Assoc | | Year | 2018 | | PMID | [30371228](https://pubmed.ncbi.nlm.nih.gov/30371228/) | | DOI | [10.1161/JAHA.118.008552](https://doi.org/10.1161/JAHA.118.008552) | | Study key | x19 | ## Takeaway Sleeping more than 8 hours per night is linked to an increased risk of death and cardiovascular problems. ## The question What is the association between self-reported sleep duration and quality and the risk of cardiovascular disease and mortality? ## Hypothesis The study hypothesized that sleep duration and quality may be associated with cardiovascular harm and mortality. ## Methods A systematic review, meta-analysis, and spline analysis of prospective cohort studies were conducted. Data from identified studies in MEDLINE and EMBASE were extracted. Linear and nonlinear dose-response meta-analysis models, along with DerSimonian-Laird random-effects models of risk ratios, were used to analyze the data. ## Results Seventy-four studies with 3,340,684 participants were reviewed. Self-reported sleep duration >8 hours was associated with an increased risk of all-cause mortality: 1.14 for 9 hours, 1.30 for 10 hours, and 1.47 for 11 hours. No significant difference was found for sleep <7 hours, and similar patterns were observed for stroke and cardiovascular disease mortality. Subjective poor sleep quality was associated with coronary heart disease (risk ratio 1.44) but not with mortality or other outcomes. ## Conclusion Divergence from the recommended 7 to 8 hours of sleep is associated with a higher risk of mortality and cardiovascular events. Longer sleep durations may be more strongly associated with adverse outcomes compared to shorter sleep durations. ## Limitations The abstract does not explicitly state limitations of the study. ## Verbatim from the abstract > divergence from the recommended 7 to 8 hours of sleep is associated with higher mortality ## Increased Risk of All-Cause Mortality with Longer Sleep Duration | Measure | Risk Ratio | | --- | --- | | 9 hours | 1.14 | | 10 hours | 1.3 | | 11 hours | 1.47 | *Risk ratios for all-cause mortality associated with self-reported sleep durations greater than 8 hours.* ## 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 | | --- | --- | --- | | Sleep Optimization & Circadian Systems | — | — | | Nasal-Breathing Sleep Tape | — | — | ## Reference 1. **Self-Reported Sleep Duration and Quality and Cardiovascular Disease and Mortality: A Dose-Response Meta-Analysis** J Am Heart Assoc 2018 · [PMID 30371228](https://pubmed.ncbi.nlm.nih.gov/30371228/) · [DOI 10.1161/JAHA.118.008552](https://doi.org/10.1161/JAHA.118.008552) > divergence from the recommended 7 to 8 hours of sleep is associated with higher mortality ## Structured data ```json {"@context":"https://schema.org","@graph":[{"@type":"MedicalWebPage","@id":"https://magellanlongevity.com/study/x19.html#page","url":"https://magellanlongevity.com/study/x19.html","name":"Self-Reported Sleep Duration and Quality and Cardiovascular Disease and Mortality: A Dose-Response…","description":"Sleeping more than 8 hours per night is linked to an increased risk of death and cardiovascular problems.","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/x19.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":"Self-Reported Sleep Duration and Quality and…","item":"https://magellanlongevity.com/study/x19.html"}]},{"@type":"ScholarlyArticle","@id":"https://magellanlongevity.com/study/x19.html#study","name":"Self-Reported Sleep Duration and Quality and Cardiovascular Disease and Mortality: A Dose-Response Meta-Analysis","headline":"Self-Reported Sleep Duration and Quality and Cardiovascular Disease and Mortality: A Dose-Response…","datePublished":"2018","isPartOf":{"@type":"Periodical","name":"J Am Heart Assoc"},"identifier":"PMID:30371228","url":"https://pubmed.ncbi.nlm.nih.gov/30371228/","sameAs":"https://doi.org/10.1161/JAHA.118.008552","abstract":"Sleeping more than 8 hours per night is linked to an increased risk of death and cardiovascular problems."}]} ``` ## Related on Magellan Longevity - [Sleep duration and risk of all-cause mortality: a systematic review and meta-analysis.](https://magellanlongevity.com/study/sleep_mortality.md) - [Systematic review of light exposure impact on human circadian rhythm.](https://magellanlongevity.com/study/bluelight.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).