A study that came out last year: light exposure affects heart disease chances.
Question Is personal light exposure at night associated with cardiovascular disease incidence?
Findings In this cohort study of 88 905 adults aged older than 40 years, exposure to brighter light at night was associated with higher risks of coronary artery disease, myocardial infarction, heart failure, atrial fibrillation, and stroke, independent of established cardiovascular risk factors.