Nocturnal Screen Exposure and Sleep Disturbance

In the digital era, social media has become an integral part of everyday life, particularly among adolescents, young adults, and working professionals. While these platforms provide numerous benefits, including social connectivity, entertainment, and access to information, they also pose significant challenges to users' sleep health. This chapter explores the detrimental impact of late-night social media usage on sleep quality and overall well-being. As screen time during nighttime hours becomes increasingly common, users are exposed to blue light emissions, algorithm-driven content, and cognitive stimulation that delay sleep onset and reduce sleep duration. Biologically, the disruption of circadian rhythms and suppression of melatonin caused by prolonged exposure to screens lead to poor sleep architecture and neural fatigue. Psychologically, users report heightened anxiety, mood swings, and depressive symptoms linked to both insufficient sleep and online social comparison.

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