A new study suggests that exposure to artificial light at night—whether from streetlights, screens, or bedside lamps—could be linked to a higher risk of developing heart disease. Researchers found that people who slept in brighter environments were more likely to experience cardiovascular issues over time, adding to growing concerns about how modern lighting habits might be messing with our health.

Editor’s Note: We’ve all heard that late-night scrolling or sleeping with the TV on isn’t great for sleep quality, but this study hints at something bigger—our bodies might pay a long-term price for living in a world that never really turns dark. If confirmed, it could mean rethinking everything from urban lighting to bedtime routines.