Key Takeaways

Time changes can increase stroke risk and cause mood changes and sleep disturbances.

This is due to disrupted circadian rhythm and hormone levels.

The health effects are more prominent in the spring, when people lose an hour of sleep.

The end of daylight saving time on Nov. 2 will bring shorter and darker days. The biannual time change can also have real health impacts. A new study suggests that scrapping it altogether could significantly reduce stroke and obesity cases in the United States.

Abandoning Daylight Saving Time Has Real Benefits

A new study, published in PNAS , suggests that shifting to permanent standard time would lead to a decrease in the prevalence of stroke and obesity , potentially preventing more than 300,000 strokes and 2 million obesity cases

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