Puwadol Jaturawutthichai/Shutterstock.com

Researchers say they’ve found a rise in brain-damaging blood clots right after the time switch.

Aside from feeling discombobulated, here’s another thing to worry about when Daylight Saving Time arrives March 13: brain-ravaging blood clots.

Researchers today released a preliminary study detailing their examination of a decade of hospital records in Finland, saying they’ve found a spike in patients with ischemic strokes after Daylight Saving. The rate of strokes jumped 8 percent in the two days after the time switch, compared with two weeks before and after, though following that brief period it settled back down to average.

They believe a disruption in the body’s natural cycle is behind the rise in strokes. Here’s more from a press release:

“Previous studies have shown that disruptions in a person’s circadian rhythm, also called an internal body clock, increase the risk of ischemic stroke, so we wanted to find out if daylight saving time was putting people at risk,” said study author Jori Ruuskanen, MD, PhD, of the University of Turku in Turku, Finland....

People with cancer were 25 percent more likely to have a stroke after daylight saving time than during another period. The risk was also higher for those over age 65, who were 20 percent more likely to have a stroke right after the transition.

Hospital deaths from stroke did not increase in the week after a daylight saving time transition.

The researchers will share more information when they present the final study in April at the American Academy of Neurology’s annual meeting in Vancouver.

Top image: Puwadol Jaturawutthichai/Shutterstock.com

About the Author

Most Popular

  1. photo: Cranes on the skyline in Oakland, California
    Life

    How to Make a Housing Crisis

    The new book Golden Gates details how California set itself up for its current affordability crunch—and how it can now help build a nationwide housing movement.

  2. photo: bicyclists in Paris during a transit strike in December.
    Transportation

    Paris Mayor: It's Time for a '15-Minute City'

    In her re-election campaign, Mayor Anne Hidalgo says that every Paris resident should be able to meet their essential needs within a short walk or bike ride.

  3. Life

    Why Amsterdam May Clamp Down on Weed and Sex Work

    Proposals to ban cannabis for tourists and relocate the red-light district would dramatically reshape the city’s anything-goes image.

  4. animated illustration: cars, bikes, scooters and drones in motion.
    Transportation

    This City Was Sick of Tech Disruptors. So It Decided to Become One.

    To rein in traffic-snarling new mobility modes, L.A. needed digital savvy. Then came a privacy uproar, a murky cast of consultants, and a legal crusade by Uber.

  5. photo: Masdar City in Abu Dhabi
    Environment

    What Abu Dhabi’s City of the Future Looks Like Now

    At the UN’s World Urban Forum in Abu Dhabi, attendees toured Masdar City, the master-planned eco-complex designed to show off the UAE’s commitment to sustainability.

×