Everyone agrees the twice-a-year clock change is ridiculous.
But if we’re making one time permanent, why choose the one that most sleep and circadian experts don’t recommend?
Permanent standard time aligns better with our biology because morning sunlight is what sets our internal clocks. Permanent Daylight Saving Time means darker winter mornings, later body clocks, and more circadian disruption. This would be another disaster for American health. It’s probably too late to stop this but switch this to permanent Standard time instead!!!!
🚨🚨🚨🚨Today the U.S. House passed the Sunshine Protection Act, advancing legislation that would make Daylight Saving Time permanent nationwide.
This is the biggest legislative step this issue has taken in years but it is not law.
The bill now moves to the U.S. Senate, where there is still an opportunity for it to be debated, amended, or rejected. If you care about health and circadian biology, this is the time to speak up.
The scientific case against permanent DST has become increasingly strong:
• Morning light is the most powerful signal for synchronizing the human circadian clock.
• Permanent DST delays sunrise for much of the year, especially in winter, reducing exposure to morning light when our brains need it most.
• Later sunrises are associated with chronic circadian misalignment, sleep loss, poorer mood, reduced alertness, and increased cardiometabolic risk.
• Studies comparing western versus eastern portions of time zones consistently show worse health outcomes where people experience later sunrises despite sharing the same clock time.
• The American Academy of Sleep Medicine and numerous sleep and circadian experts recommend permanent Standard Time, not permanent DST, as the option that best aligns with human biology.
The argument for permanent DST is largely one of convenience and preference for lighter evenings. The argument for permanent Standard Time is one of physiology and public health.
If you believe our laws should reflect the best available scientific evidence, now is the time to respectfully contact your U.S. Senators. Tell them that while ending the twice-yearly clock changes is a worthy goal, permanent Daylight Saving Time is not the healthiest solution. Ask them instead to support permanent Standard Time, which preserves the morning light our circadian system depends on.
Please REPOST this. The Senate has not yet voted, and informed voices can still make a difference.
@LeaderJohnThune is the Senate majority leader that will determine when this legislation comes to the Senate for debate. He should know how you feel.
@paulsoaresjr@eviemagazine For sure. This is the best argument I’ve seen so far! I just think men and women should get off screens as much as possible.