Daylight Saving Time has scientifically established negative effects on health and economy
the verdict
SUPPORTED
the evidence backs this
confidence 63/100
Multiple studies and reviews support the claim that Daylight Saving Time transitions have negative effects on health, notably increasing mortality risks, ischemic strokes, sleep disruption, and cognitive deficits.
Evidence for · 5
Daylight Saving Time Transitions: Impact on Total Mortality
2020 · cited by 24
Paper 0 finds a significant increase in daily total mortality during the week following the spring DST transition.
Evidence against · 1
DAYS OF THE WEEK, SEASONS OF THE YEAR, CHANGE TO DAYLIGHT SAVING TIME, AND CARDIOVASCULAR MORTALITY IN MEN
2014 · cited by 0
Paper 8 found no significant associations between cardiovascular disease mortality and changes to daylight saving time in a prospective study of men.
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More for · 4
The effects of daylight saving time and clock time transitions on sleep and sleepiness: a systematic review.
2025 · cited by 2
Paper 2 reports a systematic review showing adverse effects of DST transitions on sleep duration, quality, and daytime sleepiness.
How is Daylight Saving Time still a thing?: Disruptions from Daylight Saving Time transitions lead to cognitive performance deficits
2021 · cited by 2
Paper 3 demonstrates that DST transitions lead to cognitive performance deficits and increased errors.
Daylight Saving Time and Health: Scoping Review with ☸️SAIMSARA
2026 · cited by 0
Paper 10's scoping review links DST transitions to short-term circadian disruption, sleep loss, and measurable increases in mortality and safety risks.
Changes in ischemic stroke occurrence following daylight saving time transitions.
2016 · cited by 0
Paper 11 shows an increased risk of ischemic stroke hospitalizations immediately following DST transitions.