Key Takeaways

Light pollution could be harming heart healthPeople exposed to lots of artificial light have a higher risk of heart diseaseResearchers think the light causes stress

MONDAY, Nov. 3, 2025 (HealthDay News) — The bright lights of the big city might seem dazzling, but they can be hard on your heart health, a new study says.

People exposed to high levels of artificial light have an increasingly higher risk of heart disease , researchers are scheduled to report at a Nov. 10 meeting of the American Heart Association in New Orleans.

Higher exposure to artificial light at night was associated with a 35% increased risk of heart disease within five years, and a 22% increased risk over 10 years, researchers found.

“We found a nearly linear relationship between nighttime light and h

See Full Page