Morning blue, evening red: a simple light trick for better sleep?

NCT ID NCT07465250

First seen Mar 11, 2026 · Last updated May 16, 2026 · Updated 11 times

Summary

This study tested whether a combination of morning blue light and evening red light therapy could improve sleep in 20 adults with mild sleep troubles. Participants wore a wrist device to track sleep for 7 days without any changes, then for 7 days while using the light therapy. The goal was to see if the light routine helped them fall asleep faster and feel more alert during the day.

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Contacts and locations

Locations

  • Colorado State University

    Fort Collins, Colorado, 80523, United States

Conditions

Explore the condition pages connected to this study.