09/14/2026
Exposure to light during the nighttime is linked to important and potentially harmful changes to the structure and function of the heart, according to a study of more than 11,000 people published in the European Heart Journal.
3 lux is a very dim level of light, roughly equal to moonlight or a crack of light under a closed bedroom door.
-Hang blackout curtains to block streetlights.
-Cover or remove small LED lights on alarm clocks and electronics.
-Wear a comfortable sleep mask if total room darkness is hard to achieve.
Nighttime light exposure linked to subclinical findings and clinical events