{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T07:01:12Z","timestamp":1790319672847,"version":"4.1.0"},"reference-count":59,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T00:00:00Z","timestamp":1788307200000},"content-version":"vor","delay-in-days":1,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T00:00:00Z","timestamp":1788220800000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"funder":[{"DOI":"10.13039\/501100000780","name":"European Commission","doi-asserted-by":"publisher","award":["945238"],"award-info":[{"award-number":["945238"]}],"id":[{"id":"10.13039\/501100000780","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Pineal Research"],"published-print":{"date-parts":[[2026,9]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:p>\n                    Controlled studies have demonstrated that light supplementation benefits circadian entrainment, sleep and mood. Translating these findings into effective, real\u2010world usage of light supplementation is, however, challenging because naturalistic and supplemental light exposure are shaped by personal habits and environmental light conditions. Bridging this translation gap is especially critical for older adults, given the reduced ocular light sensitivity associated with natural ageing, which exacerbates low daytime indoor light exposure in urban housing. We therefore set out to investigate the determinants of self\u2010directed light supplementation in this population, and what the real\u2010world feasibility and efficacy of daytime light supplementation is. We recruited 202 participants (63\u201392 years; 139 females) to our interventional, prospective, randomised study in three major EU cities at different latitudes (Amsterdam, Bologna, Tartu). Participants underwent a 2\u2010week baseline assessment of light exposure, rest\u2013activity patterns and sleep through wearables and daily diaries. Participants were then randomised to either 12 weeks of self\u2010implemented indoor light supplementation using a lamp placed in their most frequently used room (&gt;\u20098000 melanopic EDI,\n                    <jats:italic>N<\/jats:italic>\n                    \u2009=\u200998) or a no\u2010intervention group. A subsequent 2\u2010week reassessment showed that greater naturalistic light exposure was associated with increased daytime activity, consolidated wakefulness, better subjective sleep quality, and reduced metabolic disorder incidence. Individuals with lower naturalistic light exposure self\u2010initiated earlier and longer indoor light supplementation across seasons, in which supplementation onset before 10:00 was associated with greater daytime activity and lower rest\u2013activity fragmentation. These results confirm that this simple, non\u2010pharmacological, and low\u2010cost intervention has broad potential to support healthy ageing in urban settings.\n                  <\/jats:p>","DOI":"10.1111\/jpi.70174","type":"journal-article","created":{"date-parts":[[2026,9,2]],"date-time":"2026-09-02T23:01:32Z","timestamp":1788390092000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["ENLIGHTENme: Translating the Benefits of Self\u2010Administered Daytime Light Supplementation to Older Adults in the Real World"],"prefix":"10.1111","volume":"78","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9189-5820","authenticated-orcid":false,"given":"D\u00e9bora B.","family":"Constantino","sequence":"first","affiliation":[{"name":"Chronobiology Section, Faculty of Health and Medical Sciences University of Surrey Guildford 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Istituto delle Scienze Neurologiche di Bologna, Programma di Neurogenetica Bologna Italy"},{"name":"Department of Biomedical and Neuromotor Sciences (DIBINEM) University of Bologna Bologna Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0005-2196-1083","authenticated-orcid":false,"given":"Anne","family":"Landvreugd","sequence":"additional","affiliation":[{"name":"Department of Biological Psychology Faculty of Behavior and Movement Sciences, Vrije Universiteit Amsterdam Amsterdam the Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0008-4342-8708","authenticated-orcid":false,"given":"Marina","family":"Marinelli","sequence":"additional","affiliation":[{"name":"IRCCS Istituto delle Scienze Neurologiche di Bologna, UOSI Epidemiologia e Statistica Bologna 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