US EditionToo Much Night Light? It Could Be Hurting Your Heart
Study of 88,905 UK participants links bright nighttime light to up to 50% higher cardiovascular risk by disrupting the body’s circadian clock, independent of sleep loss.
3 Articles
3 Articles
Too Much Night Light? It Could Be Hurting Your Heart
Exposure to artificial light at night appears to trigger stress in the brain and inflammation in the arteries, raising heart disease risk. Researchers say even modest light increases could have long-term cardiovascular consequences. Higher exposure to artificial light at night was associated with increased stress activity in the brain, inflammation in the arteries, and a [...]
Nighttime exposure to light may raise cardiovascular risk by up to 50% — Harvard Gazette
Health Nighttime exposure to light may raise cardiovascular risk by up to 50% Alvin Powell Harvard Staff Writer December 1, 2025 5 min read New research suggests that it disrupts biological clock Exposure to light at night raises cardiovascular disease risk by up to 50 percent over sleeping in the dark, new research shows. But scientists say the effect isn’t from lack of sleep, but from disruption …
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