Nighttime Bedroom Light Intensity Disrupts Sleep Quality in Young Adults
Light in the bedroom above 5 lux reduces sleep efficiency, shortens total sleep duration, increases awakenings, and correlates with more daytime sleepiness and fatigue.
- Levels above 5 lux at night impair sleep quality by reducing efficiency and increasing disruptions.
- Students in brighter bedrooms experience shorter total sleep time due to light interference.
| Metric | Scientific Observation | Impact Magnitude | Source | ||
|---|---|---|---|---|---|
| >5 lux | Poorer overall sleep quality | Reduced duration and efficiency | Li et al. (2024), Sleep Medicine | ||
| >5 lux | Increased awakenings | Lower sleep efficiency | Li et al. (2024), Sleep Medicine | ||
| Brighter bedrooms | Shorter total sleep duration | More daytime fatigue | Li et al. (2024), Sleep Medicine |