This news may keep you up at night.

New research from Harvard University has found a link between evening light exposure and an increased risk of heart disease. Moreover, the authors claim that even modest amounts of light at night can have serious, long-term consequences.

In the small study, brain imaging and satellite measurements were used to draw a connection between nighttime light exposure and cardiovascular risk.

The team tied greater exposure to artificial light at night to increased stress activity in the brain, inflammation in the arteries and higher odds of heart disease.

“We know that environmental factors, such as air and noise pollution, can lead to heart disease by affecting our nerves and blood vessels through stress,” said study senior author Dr. Shady Abohashem, head

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