Seasonal clock changes increase risk of obesity and stroke: study
Stanford researchers project that adopting permanent standard time in the U.S. could annually prevent 300,000 strokes and reduce obesity cases by 2.6 million, improving circadian health.
- Stanford Medicine researchers published a study showing seasonal clock changes raise risks of obesity and stroke in the U.S.
- The study arose amid longstanding concerns about the biannual time shifts disrupting circadian rhythms and causing health problems.
- Researchers modeled county-level data on light exposure and health to find that permanent standard time benefits circadian alignment more than alternatives.
- The model predicts an annual decrease in obesity by 0.78% and a reduction in stroke by 0.09% if permanent standard time is adopted.
- The findings suggest adopting permanent standard time could improve public health by lowering disease rates and easing biological clock disruptions nationwide.
16 Articles
16 Articles
Seasonal clock changes increase risk of obesity and stroke: study
With clocks set to turn back an hour across much of Canada and the U.S. on Nov. 2, a new study is shedding light on the negative health impacts of seasonal time changes, which could include a higher risk of obesity and stroke.
Study suggests most Americans would be healthier with 'permanent standard time'
Every spring, Americans dutifully adjust their clocks forward to daylight saving time, and every fall, back to standard time—but no one seems very happy about it. The biannual time shift is not only inconvenient, it's also known to be acutely bad for our health. The collective loss of an hour of sleep on the second Sunday in March has been linked to more heart attacks and fatal traffic accidents in the ensuing days.
Ending daylight saving time could be better for our health
It’s a hot (yet also sleepy) debate that ignites twice a year in the United States: Why are we still changing the clocks? The “spring forward” every March can feel particularly volatile, with research linking that loss of a precious hour of sleep to more heart attacks and fatal car accidents. Now, a new study published today in the journal PNAS indicates that sticking with standard time may improve health. Three time policies While many people …


A team at Stanford University concludes that changing the hour twice a year is “the worst decision” for the health of the population and reversing it would prevent thousands of strokes and help reduce obesity in the United States.When is the change of post-summer time in Spain in 2025: the date when the clocks are delayed If in the United States the hour was not changed twice a year, there would be a lower incidence of obesity and strokes, accor…
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