New research suggests that the blue light emitted from our phones and screens is not the primary cause of sleep disruption, despite popular belief.

• The amount of blue light from screens is inconsequential compared to natural sunlight and may only delay sleep by about nine minutes.
• According to Professor Jamie Zeitzer of Stanford University, the content consumed on devices before bed is more likely to interfere with sleep than the light itself.
• Experts recommend increased light exposure in the morning and reduced light in the evening, emphasizing that overall light "dose" throughout the day is more critical for sleep regulation.