Light and Sleep
There’s little evidence that blue light from screens disrupts sleep, especially at typical exposure levels. However, prolonged exposure to dim light in the evening may have some impact on circadian rhythms, though individual sensitivity varies widely. It's wise to minimize bright light exposure at night, but using devices like Kindles or computers isn't necessarily harmful. More importantly, the stimulating effect of devices may hinder sleep more than the light itself.In this clip
From this podcast

The Art of Manliness
Unlock Better Sleep and Health by Harnessing Your Circadian Rhythm
Related Questions
Is blue light from screens problematic for our circadian rhythm, especially when used before sunrise in winter months, as discussed in the episodes Master Your Sleep & Be More Alert When Awake | Huberman Lab Podcast #2 and The Neuroscience of Optimal Performance: Dr. Andrew Huberman | Rich Roll Podcast, as well as in the clip Light and Mood and the clip Light and Circadian Rhythms?
Is blue light from screens problematic for our circadian rhythm, especially when used before sunrise in winter months, as discussed in the episodes Master Your Sleep & Be More Alert When Awake | Huberman Lab Podcast #2 and The Neuroscience of Optimal Performance: Dr. Andrew Huberman | Rich Roll Podcast, as well as in the clips Light and Mood and Light and Circadian Rhythms?
Is blue light from screens problematic for our circadian rhythm, especially when used before sunrise in winter months, as discussed in the episodes Master Your Sleep & Be More Alert When Awake | Huberman Lab Podcast #2 and The Neuroscience of Optimal Performance: Dr. Andrew Huberman | Rich Roll Podcast, as well as in the clips Light and Mood and Light and Circadian Rhythms?