{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,8]],"date-time":"2026-09-08T09:00:54Z","timestamp":1788858054336,"version":"build-2803163510"},"reference-count":72,"publisher":"Oxford University Press (OUP)","issue":"7","license":[{"start":{"date-parts":[[2025,10,13]],"date-time":"2025-10-13T00:00:00Z","timestamp":1760313600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,7,13]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Study Objectives<\/jats:title>\n                    <jats:p>High ambient temperatures are associated with negative health outcomes, including heat stress, injuries and accidents, and poor mental health. Sleep loss may contribute to these adverse impacts. However, robust supporting evidence is lacking.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Data from a global sample of sleep tracker users (N\u2009=\u2009317\u2009758; Withings Sleep Analyzer [WSA]: n\u2009=\u2009116\u2009879; Withings ScanWatch: n\u2009=\u2009200\u2009879) between January 2020 and September 2023 (~165 million nights) were analyzed. Ambient temperatures (24\u00a0hour average) were extracted from a climate model for each nightly observation based on the users\u2019 location. We used the case-time-series design with participant\u2013year\u2013week intercept and spline functions to derive exposure\u2013response curves between temperature and short sleep (&amp;lt;6\u00a0hours\/night) prevalence, adjusting for other time-varying factors and meteorological variables.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>High temperatures (99th vs 50th percentile of the observed global distribution; 27.3\u00b0C vs 12.2\u00b0C) were associated with (mean [95%CI]) \u221215.2 [\u221215.6, \u221214.9] and \u221216.9 [\u221217.4, \u221216.4] minute sleep loss in the users of the smartwatch and under-mattress sensors, respectively. Similarly, high temperatures were associated with an approximately 40% relative increase in the probability of short sleep on the same night (WSA: Risk Ratio: RR [95%CI]; 1.40 [1.38, 1.41]; ScanWatch: 1.43 [1.41, 1.44]). Estimates ranged between 10% and 75% depending on the country. Sleep loss to high temperatures was higher in participants residing in Europe and countries with lower national gross domestic product per capita.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>High temperatures negatively impact sleep duration and increase the probability of short sleep globally. Our findings suggest that rising temperatures may increase the health impacts of short sleep.<\/jats:p>\n                    <jats:p>Statement of Significance High ambient temperatures are linked to negative health outcomes, with sleep loss potentially contributing to these effects. This study analyzed data from 317\u2009758 global sleep tracker users to examine the relationship between temperature and short sleep. Results showed an approximately 40% relative increase in the probability of short sleep at high temperatures (99th vs 50th percentile; 27.3\u00b0C vs 12.2\u00b0C) globally. Sleep loss to high temperatures was higher in participants residing in countries with lower national gross domestic product per capita and older adults. These results suggest that sleep inadequacy from rising temperature due to climate change may further amplify global inequalities. Our findings also highlight the urgent need for targeted strategies to mitigate temperature-induced sleep loss.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/sleep\/zsaf323","type":"journal-article","created":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T11:57:02Z","timestamp":1760183822000},"source":"Crossref","is-referenced-by-count":6,"title":["How do we sleep while our beds are burning? High ambient temperatures are associated with substantial sleep loss"],"prefix":"10.1093","volume":"49","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0760-0714","authenticated-orcid":false,"given":"Bastien","family":"Lechat","sequence":"first","affiliation":[{"name":"Flinders Health and Medical Research Institute: Sleep Health, College of Medicine and Public Health, Flinders University , Adelaide , SA,","place":["Australia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Barbara","family":"Toson","sequence":"additional","affiliation":[{"name":"Flinders Health and Medical Research Institute: Sleep Health, College of Medicine and Public Health, Flinders University , Adelaide , SA,","place":["Australia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0707-8068","authenticated-orcid":false,"given":"Hannah","family":"Scott","sequence":"additional","affiliation":[{"name":"Flinders Health and Medical Research Institute: Sleep Health, College of Medicine and Public Health, Flinders University , Adelaide , SA,","place":["Australia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Duc Phuc","family":"Nguyen","sequence":"additional","affiliation":[{"name":"Flinders Health and Medical Research Institute: Sleep Health, College of Medicine and Public Health, Flinders University , Adelaide , SA,","place":["Australia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2128-3404","authenticated-orcid":false,"given":"Billingsley","family":"Kaambwa","sequence":"additional","affiliation":[{"name":"Health Economics Unit, College of Medicine and Public Health, Flinders University , Health Sciences Building, Sturt Road, Bedford Park, SA 5042 ,","place":["Australia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9534-8699","authenticated-orcid":false,"given":"Amy C","family":"Reynolds","sequence":"additional","affiliation":[{"name":"Flinders Health and Medical Research Institute: Sleep Health, College of Medicine and Public Health, Flinders University , Adelaide , SA,","place":["Australia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4925-4725","authenticated-orcid":false,"given":"Jack","family":"Manners","sequence":"additional","affiliation":[{"name":"Flinders Health and Medical Research Institute: Sleep Health, College of Medicine and Public Health, Flinders University , Adelaide , SA,","place":["Australia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert J","family":"Adams","sequence":"additional","affiliation":[{"name":"Flinders Health and Medical Research Institute: Sleep Health, College of Medicine and Public Health, Flinders University , Adelaide , SA,","place":["Australia"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3832-2358","authenticated-orcid":false,"given":"Jean-Louis","family":"Pepin","sequence":"additional","affiliation":[{"name":"HP2 Laboratory, Univ. 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