Daylight saving time (DST) consists in a one-hour advancement of legal time in spring offset by a backward transition of the same magnitude in fall. It creates a minimal circadian misalignment that could disrupt sleep and homoeostasis in susceptible individuals and lead to an increased incidence of pathologies and accidents during the weeks immediately following both transitions. How this shift affects mortality dynamics on a large population scale remains, however, unknown. This study examines the impact of DST on all-cause mortality in 16 European countries for the period 1998-2012. It shows that mortality decreases in spring and increases in fall during the first two weeks following each DST transition. Moreover, the alignment of time data around DST transition dates revealed a septadian mortality pattern (lowest on Sundays, highest on Mondays) that persists all-year round, irrespective of seasonal variations, in men and women aged above 40.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9659560 | PMC |
http://dx.doi.org/10.1038/s41467-022-34704-9 | DOI Listing |
Nanophotonics
March 2024
Department of Applied Physics, Kyung Hee University, Yongin-si, Gyeonggi-do 17104, Republic of Korea.
J Sleep Res
November 2024
Facultade de Física, Departamento de Física Aplicada and iMATUS, Universidade de Santiago de Compostela, Santiago de Compostela, Spain.
Chronobiol Int
December 2024
Chronobiology Section, Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK.
One of the main challenges in translating chronobiology research into clinical practice is represented by differences in how basic scientists and clinicians evaluate evidence. The workshop "Assessing Evidence in Translational Chronobiology," which was held at the University of Surrey in June 2023, addressed this issue by bringing together basic scientists and clinicians to evaluate evidence on two specific topics: the impact of Daylight Saving Time (DST) on road traffic accidents and the relationship between delayed school start times (SSTs) and sleep duration in high school students. A comprehensive literature search was conducted for discussions during the workshop, which is presented in this review.
View Article and Find Full Text PDFSleep Med
January 2025
Universidade de Santiago de Compostela, Facultade de Física, Departamento de Física Aplicada and iMATUS, ES15782, Santiago de Compostela, Spain. Electronic address:
We analyze data of the prevalence of sleep disturbance among Chinese healthcare professionals and maintain that they increase Eastward, refining previous results. We suggest that position in time zone is a valid explanatory metric only after daily rhythms have been uniformed. On a more general note, this finding suggest that daylight saving time might help reduce sleep disturbance.
View Article and Find Full Text PDFBMJ
October 2024
Sleep Disorders Division, Department of Neurology, Vanderbilt University School of Medicine, Nashville, TN, USA.
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