{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T00:50:19Z","timestamp":1785891019170,"version":"3.56.0"},"reference-count":72,"publisher":"The Royal Society","issue":"2076","license":[{"start":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T00:00:00Z","timestamp":1785888000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T00:00:00Z","timestamp":1785888000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000155","name":"Social Sciences and Humanities Research Council of Canada","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000155","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100000082","name":"Division of Graduate Education","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100000082","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2026,8,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Sleep disorders are rising globally, but their lifestyle causes remain unclear. We recorded sleep\u2013wake patterns via actigraphy from 1039 Orang Asli adults in Peninsular Malaysia experiencing varying levels of market integration, including access to permanent electrical and housing infrastructure, use of digital technologies, and participation in wage labour. We evaluated associations between these lifestyle variables and sleep timing, continuity and quantity, while accounting for relevant demographic and environmental covariates. Access to powerline electricity was associated with delayed and less regular sleep timing, shorter sleep duration and fewer nighttime disruptions. Ambient temperature more strongly influenced sleep onset than offset, resulting in shorter sleep under hotter conditions. Housing structure modestly shaped sleep timing: individuals living in wood or concrete housing woke earlier and showed reduced sensitivity of sleep timing to ambient temperature, indicating that built environments can modify thermal influences on sleep. Participation in wage labour was associated with fewer nighttime awakenings but not with shifts in sleep timing. Age and sex were strong predictors of sleep variation, with older adults sleeping earlier, with more regularity, and with fewer disruptions. These findings show that market integration exerts heterogeneous, context-dependent effects across multiple sleep outcomes.<\/jats:p>","DOI":"10.1098\/rspb.2026.0558","type":"journal-article","created":{"date-parts":[[2026,8,5]],"date-time":"2026-08-05T00:06:28Z","timestamp":1785888388000},"source":"Crossref","is-referenced-by-count":0,"title":["Recent lifestyle change impacts sleep and circadian rhythms among the Indigenous peoples of Peninsular Malaysia"],"prefix":"10.1098","volume":"293","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3260-7854","authenticated-orcid":false,"given":"Kathleen D.","family":"Reinhardt","sequence":"first","affiliation":[{"name":"University of Calgary, 1","place":["Calgary,, Alberta, Canada, T2N 1N4,"],"department":["Department of Anthropology and Archaeology,"]},{"name":"University of Calgary, 2","place":["Calgary,, Alberta, Canada, T2N 1N4,"],"department":["Department of Psychology, Hotchkiss Brain Institute,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0634-9233","authenticated-orcid":false,"given":"Thomas S.","family":"Kraft","sequence":"additional","affiliation":[{"name":"University of Utah, 3","place":["Salt Lake City,, UT, USA, 84112,"],"department":["Department of Anthropology,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8827-2750","authenticated-orcid":false,"given":"Amanda J.","family":"Lea","sequence":"additional","affiliation":[{"name":"Vanderbilt University, 4","place":["Nashville,, TN, USA, 37235,"],"department":["Department of Biological Sciences,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1837-5260","authenticated-orcid":false,"given":"Ian J.","family":"Wallace","sequence":"additional","affiliation":[{"name":"University of New Mexico, 5","place":["Albuquerque,, NM, USA, 87131,"],"department":["Department of Anthropology,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yvonne A. L.","family":"Lim","sequence":"additional","affiliation":[{"name":"Universiti Malaya, 6","place":["Federal Territory of Kuala Lumpur, Malaysia, 50603,"],"department":["Department of Parasitology,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Colin","family":"Nicholas","sequence":"additional","affiliation":[{"name":"Center for Orang Asli Concerns, 7","place":["Selangor, Malaysia, 53100,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tan Bee Ting","family":"A\/P Tan Boon Huat","sequence":"additional","affiliation":[{"name":"Universiti Malaya, 6","place":["Federal Territory of Kuala Lumpur, Malaysia, 50603,"],"department":["Department of Parasitology,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kar Lye","family":"Tam","sequence":"additional","affiliation":[{"name":"Universiti Malaya, 6","place":["Federal Territory of Kuala Lumpur, Malaysia, 50603,"],"department":["Department of Parasitology,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven K. W.","family":"Chow","sequence":"additional","affiliation":[{"name":"Federation of Private Medical Practitioners\u2019 Associations of Malaysia, 8","place":["Federal Territory of Kuala Lumpur, Malaysia, 50480,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Izandis","family":"bin Mohd Sayed","sequence":"additional","affiliation":[{"name":"Hospital Orang Asli Gombak, 9","place":["Selangor, Malaysia, 68100,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kamal","family":"Solhaimi bin Fadzil","sequence":"additional","affiliation":[{"name":"Universiti Malaya, 10","place":["Federal Territory of Kuala Lumpur, Malaysia, 50603,"],"department":["Center for Malaysian Indigenous Studies,"]},{"name":"Universiti Malaya, 11","place":["Federal Territory of Kuala Lumpur, Malaysia, 50603,"],"department":["Department of Anthropology and Sociology,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Michael C.","family":"Antle","sequence":"additional","affiliation":[{"name":"University of Calgary, 2","place":["Calgary,, Alberta, Canada, T2N 1N4,"],"department":["Department of Psychology, Hotchkiss Brain Institute,"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5016-4423","authenticated-orcid":false,"given":"Vivek V.","family":"Venkataraman","sequence":"additional","affiliation":[{"name":"University of Calgary, 1","place":["Calgary,, Alberta, Canada, T2N 1N4,"],"department":["Department of Anthropology and Archaeology,"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"175","published-online":{"date-parts":[[2026,8,5]]},"reference":[{"key":"2026080420062060400_R1","doi-asserted-by":"crossref","first-page":"233","DOI":"10.1016\/j.sleh.2015.10.004","article-title":"National Sleep Foundation\u2019s updated sleep duration recommendations: final report","volume":"1","author":"Hirshkowitz","year":"2015","journal-title":"Sleep Health"},{"key":"2026080420062060400_R2","doi-asserted-by":"crossref","first-page":"2648","DOI":"10.1038\/s41591-024-03155-8","article-title":"Sleep patterns and risk of chronic disease as measured by long-term monitoring with commercial wearable devices in the All of Us Research Program","volume":"30","author":"Zheng","year":"2024","journal-title":"Nat. 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