GoKawiilStudy Links Nighttime Light Exposure to Structural Changes in the Heart
Research published this week in the European Heart Journal finds that sleeping with light present—whether from a night-light, phone, or screen glow—is associated with cardiac remodeling. Specifically, light exposure during sleep was linked to thickening of the left ventricle's wall, which reduces the chamber's internal space and impairs the heart's ability to flex properly during beats.