Tuesday, October 28, 2025

DR. JACK KRUSE: If you have A fib you have a bad relation with light at night. Light at night and heart disease links are strong!

If you have A fib you have a bad relation with light at night. Light at night and heart disease links are strong! This was just published this today in JAMA Network Open.

Using 13 million hours of personal light exposure data in >88,000 people, they found that those with the brightest nights had significantly higher risks of developing coronary artery disease, myocardial infarction, heart failure, atrial fibrillation, and stroke. These associations were robust after adjusting for established cardiovascular risk factors, including physical activity, smoking, alcohol, diet, sleep duration, socioeconomic status, and polygenic risk. Keep your homes dark at night and get in the sun for photo repair of your arteries and heart!

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