Night Light Exposure Linked to Increased Cardiovascular Disease Risk
2025-07-13
A prospective cohort study of nearly 89,000 adults over 40 found a significant association between brighter nighttime light exposure and increased incidence of coronary artery disease, myocardial infarction, heart failure, atrial fibrillation, and stroke. This association remained robust after adjusting for established cardiovascular risk factors. The relationship was stronger in women and younger individuals. The findings suggest that avoiding nighttime light exposure may be a valuable strategy for reducing cardiovascular disease risk.