Like sunrise, colors rest circadian rhythms

A novel light alternating orange and blue wavelengths had a marked effect on subjects’ melatonin production in a small study.
Those mesmerizing blue and orange hues in the sky at the start and end of a sunny day might have an essential role in setting humans’ internal clocks.
In research published in August 2024 from the University of Washington in Seattle, a novel LED light that emits alternating wavelengths of orange and blue outpaced two other light devices in advancing melatonin levels in a small group of study participants.
See our news release: newsroom.uw.ed...