EXECUTIVE SUMMARY
Sleeping with even minor bedroom lighting significantly increases risks of heart attack, stroke, and cardiovascular death, a new study reveals.
A new study from Tulane University is raising fresh concerns about sleeping with a light on, linking nighttime light exposure to a higher risk of cardiovascular disease.
Researchers found that exposure to more than 3 lux of light — roughly the brightness of moonlight — was associated with increased risks of heart failure, atrial fibrillation (irregular and often very rapid heart rhythm), heart attack, stroke and cardiovascular death.