Too much artificial light at night may increase risk of heart disease: Study

Stress rises with more exposure. REPRESENTATION PIC/ISTOCK

Exposure to artificial light at night causes increased stress activity in the brain, inflammation in the arteries, and a greater risk of heart disease.

The participants, who had no history of heart disease and no active cancer, underwent the same Positron Emission Tomography/Computed Tomography (PET/CT) scan. The study included 450 adults.

The results showed that people exposed to higher levels of artificial light at night had increased stress-related activity in the brain, more inflammation in blood vessels, and a higher likelihood of major cardiovascular events.

Researchers gathered this information from medical records, which were independently reviewed by cardiologists. The risk rose steadily with increasing light exposure.

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