: This suppression shifts our internal biological clock, leading to a condition known as delayed sleep phase syndrome.
: Exposure to this light, especially within one to two hours of bedtime, signals to the brain that it is still daytime, delaying the production of melatonin—the hormone responsible for promoting sleep. night screen
: Chronic exposure to artificial light at night (ALAN) can even dysregulate cortisol secretion, further disrupting the body's natural rest-and-recovery cycle. Cognitive Consequences: Memory and Attention : This suppression shifts our internal biological clock,
Engaging with screens late at night does more than just make you sleepy the next day; it may actively degrade your cognitive performance. However, emerging research indicates that this behavior has
Night Screens: The Hidden Impact on Sleep, Cognition, and Health
In our hyper-connected world, "night screen" time—the practice of using digital devices in the late evening or nighttime hours—has become a near-universal habit. Whether it is catching up on emails, scrolling through social media, or streaming a favorite show, these glowing rectangles are the last things many of us see before trying to sleep. However, emerging research indicates that this behavior has profound implications for our biological rhythms, mental sharpness, and long-term health. The Biological Disruption: Blue Light and Circadian Rhythms