A few days ago, we turned the clocks back one hour, and most of the country has now reverted from “Daylight Savings Time” to “Standard Time.”
Do you have trouble remembering which is which, and when do we change the clocks? Have you ever tried to deal with the early darkness, and the other adjustments you have to make to deal with all of this “springing forward” and “falling back” and think, “man this crap is killing me?”
You may be right, researchers claim that all of this switching from Daylight Savings Time to Standard Time, and back again — is indeed bad for your health.
Over time, Daylight Saving Time (DST) eliminates bright morning light that’s crucial to synchronizing your biologic clock, possibly putting people at increased risk of heart attack, stroke and other harmful effects of sleep deprivation, said Dr. Beth Ann Malow, director of the Sleep Disorders Division at Vanderbilt University Medical Center in Nashville, Tenn.
During DST changes, adults lose an average of 15 to 20 minutes of sleep. Along with potential health problems, this may also increase the risk of serious or fatal accidents.
“People think the one-hour transition is no big deal, that they can get over this in a day, but what they don’t realize is their biological clock is out of sync,” Malow said in a Vanderbilt University press release.
“It’s not one hour twice a year. It’s a misalignment of our biologic clocks for eight months of the year,” she said. “When we talk about DST and the relationship to light we are talking about profound impacts on the biological clock, which is a structure rooted in the brain. It impacts brain functions such as energy levels and alertness.”
In a commentary published Nov. 4 in the journal JAMA Neurology, Malow and her colleagues summarized large epidemiological studies that support a halt to setting clocks forward or back.
“Some people have more flexible circadian rhythms and adjust quickly while others are more affected by the switch to and from DST, including children and people with neurological conditions,” Malow said. According to Malow there’s evidence that even slight time disruptions, like living on different sides of time zones, can be enough to affect a person’s circadian rhythms.
While many sleep experts believe that doing away with time changes is a good idea, the U.S. federal government isn’t considering any such move. However, many states are taking action. Since 2015, several states have passed DST exemption laws.