Daylight Saving Time Is Back — And Your Body Is Paying For It
Most Americans woke up Sunday, March 8 with one less hour of sleep — and scientists say that's just the beginning of the damage. Clocks sprang forward by one hour at 2 a.m. local time, kicking off Daylight Saving Time 2026. For millions, it feels like mild jet lag. For others, the health consequences can be far more serious.
It's Not Just Tiredness — It's Your Body Clock
Emily Manoogian, a senior staff scientist at the Salk Institute for Biological Studies — a research institute in California focused on human biology — says the problem isn't just losing one hour of sleep. Every single day spent on Daylight Saving Time keeps the body misaligned with its natural environment.
Think of it like flying across time zones without going anywhere. Your brain thinks it's one time, but the clock on the wall says something else entirely. That gap causes real, measurable harm.
The brain has a master clock set by light and darkness. This circadian rhythm — the body's roughly 24-hour internal cycle — determines when we feel sleepy and when we're alert. Daylight Saving Time knocks that cycle out of sync, and sleep disturbances can persist for weeks.
Your Heart Is at Greater Risk Right Now
This isn't just about feeling groggy at work. Studies suggest an uptick in heart attacks on the Monday after Daylight Saving Time begins, and in strokes for two days afterward.
A 2019 analysis found that heart attack rates appeared to spike during the two full weeks following both the spring and autumn time changes. A 2024 review added that the shift may also be linked to an increase in suicide risk and traffic accidents.
Researchers believe disrupted sleep raises cortisol — the body's stress hormone — and increases inflammation. For people who already have heart conditions, that combination can be enough to trigger a serious event.
Fatal Crashes Also Spike in the First Few Days
Fatal car crashes temporarily jump in the first few days after the spring time change. The risk is highest in the morning, and researchers attribute it directly to sleep deprivation.
If you're feeling foggy behind the wheel this week, that's not just an excuse — it's biology. Give yourself extra time on the road and avoid driving when you feel unusually drowsy.
How to Help Your Body Bounce Back
The good news is there are real, practical steps you can take. Getting outside in the morning sunlight is one of the most effective. Manoogian recommends light exposure as soon as you wake up — if the sun is out, step outside. If it's still dark, turn on as many lights in your home as possible.
Consistency in sleep is also key. Adults need seven to nine hours, and sticking to the same schedule each night helps the body recalibrate faster.
Don't force yourself into an intense routine for the first few days. Ease into mornings. Eat your meals slightly later if you can. Give your gut and muscles time to catch up — they adjust more slowly than your brain does.
Is the Clock Change Worth It At All?
Manoogian says there is no documented health benefit to Daylight Saving Time. It was originally created to save energy — but evidence has shown it simply doesn't.
There is a growing movement to make Daylight Saving Time permanent and end the twice-yearly clock change. At least 20 states have passed legislation pushing for this, but a bill in Congress has repeatedly stalled.
For full coverage visit the American Heart Association or follow updates on TIME Magazine.
The debate over Daylight Saving Time isn't going away — and neither are the health risks. Until lawmakers act, the best anyone can do is protect their sleep, get outside in the morning light, and treat this week with a little extra care. Your body is working hard to catch up. Give it the chance.
Recommended Stories
Apple MacBook Neo: Most Affordable MacBook Ever for Students
Post a Comment