Denver Research Links Evening Screen Time Directly to Delayed Sleep

Research released this week from the University of Colorado Anschutz Medical Campus found that Denver residents logging more than 90 minutes of screen exposure after 9 p.m. took an average of 34 minutes longer to fall asleep than those who powered down earlier.

The timing aligns with sustained hybrid work schedules that keep laptops and phones active well past sunset along corridors like 16th Street Mall and Speer Boulevard. Local sleep clinics report a steady rise in intake calls since early 2025, when many employers shifted to later virtual meeting windows.

Programs already running in Denver neighborhoods

The Denver Public Library branch at 14th and Irving streets launched a six-week screen curfew workshop series in March that draws 40 participants each session. Across town in the Highland neighborhood, the Colorado Athletic Club on 17th Street added a monthly blue-light audit for members, pairing device logs with overnight heart-rate tracking through wearable partnerships.

Both efforts grew out of a 2025 city health department grant that allocated $180,000 for community sleep education. Attendance records show 312 residents completed the library program by June, with follow-up surveys indicating average bedtime moved forward by 22 minutes.

Numbers behind the local trend

A June 2026 Denver Health survey of 1,150 adults found 67 percent met the two-hour evening screen threshold on weekdays. The same data set showed participants who reduced that window by one hour recorded a 28 percent increase in reported sleep efficiency after four weeks. Blue-light filtering glasses sold at the REI flagship on Platte Street now average $45 per pair, with sales up 19 percent year over year.

Residents can start tonight by setting a recurring phone alarm for 8:30 p.m. that dims screens and silences notifications until morning. The library and athletic club both post free printable checklists on their websites for anyone tracking progress over the next two weeks.