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Light + Health

The Health Case Against Daylight Saving

Daylight saving in 2020 ends November 1 and will resume March 14, 2021. The American Academy of Sleep Medicine recently issued a position statement calling for an end to daylight saving, citing health risks posed by the longstanding practice designed to reduce energy costs.

Here’s the abstract:

The last several years have seen intense debate about the issue of transitioning between standard and daylight saving time. In the United States, the annual advance to daylight saving time in spring, and fall back to standard time in autumn, is required by law (although some exceptions are allowed under the statute). An abundance of accumulated evidence indicates that the acute transition from standard time to daylight saving time incurs significant public health and safety risks, including increased risk of adverse cardiovascular events, mood disorders, and motor vehicle crashes. Although chronic effects of remaining in daylight saving time year-round have not been well studied, daylight saving time is less aligned with human circadian biology — which, due to the impacts of the delayed natural light/dark cycle on human activity, could result in circadian misalignment, which has been associated in some studies with increased cardiovascular disease risk, metabolic syndrome and other health risks. It is, therefore, the position of the American Academy of Sleep Medicine that these seasonal time changes should be abolished in favor of a fixed, national, year-round standard time.

Check out the complete statement here, published in the Journal of Clinical Sleep Medicine.

author avatar
Craig DiLouie
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