Dr. Eunjin Lee Tracy set out to study insomnia in older adults the way most researchers would, expecting the worst sleepers to report the most pain and the lowest mood. They did. That part of her University of Missouri study went exactly as predicted, and honestly wasn’t the interesting part.
Buried in the same data was something her team hadn’t gone looking for. A few of the participants with genuinely bad insomnia weren’t doing nearly as badly on pain and depression as their sleep scores said they should be. What separated them wasn’t sleep quality at all. It was whether they ate, worked, and went to bed around the same time every day, weekends included.
That’s the finding. A steady routine tracked with less pain and less depression, and it held no matter the sleep quality. Tracy has a name for what happens when that steadiness breaks down: social jet lag, the same disorientation as flying across time zones, minus the flight, caused instead by a Saturday morning sleep-in or a dinner pushed back two hours because there’s nowhere to be.
Roughly half of adults over 60 report insomnia symptoms. Most have heard some version of “fix your sleep and everything else follows,” true in a general sense and useless as a plan anyone can act on this week, not unlike a lot of prevention advice that sounds right but gives nobody a place to actually start. A regular wake time is something a household can begin tomorrow.
Nobody on Tracy’s team is claiming a bedtime schedule cures insomnia, and the study itself doesn’t make that leap either. Sleep quality still shaped how participants felt. It just wasn’t the only thing that did, and for once the second lever happens to be free, doesn’t require a diagnosis, and can start with tomorrow’s breakfast.
