Nighttime Light While Sleeping Linked to Higher Cardiovascular Risk

Nighttime Light While Sleeping Linked to Higher Cardiovascular Risk

Researchers at Tulane University in New Orleans reported that exposure to low-level light while sleeping was associated with higher incidence of heart failure, atrial fibrillation, heart attack, stroke and cardiovascular mortality. Earlier research involving more than 11,000 participants had shown that sleeping in environments brighter than 3 lux led to thickening of the left-ventricular wall and reduced cardiac function, suggesting that nighttime light is a potentially modifiable risk factor for cardiovascular disease.

Actors

Dr. Lu Qi Tulane University UK Biobank Karl Lawrence King’s College London

Locations

United Kingdom Tulane University, New Orleans, Louisiana, United States King's College London, London, United Kingdom

Articles

September 14, 2026
1 total
Study links sleeping with night-time light to higher risk of heart disease and stroke
Study links sleeping with night-time light to higher risk of heart disease and stroke

Fox News • 14 Sep 23:33

Researchers at Tulane University found that exposure to low-level light while sleeping is associated with increased incidence of heart failure, atrial fibrillation, heart attack, stroke and cardiovascular mortality.

Credibility 68% Manip. 25% Center
September 11, 2026
1 total
Study links bedroom light exposure to changes in heart structure
Study links bedroom light exposure to changes in heart structure

New York Post • 11 Sep 17:50

Research finds that sleeping with as little as 3 lux of light may thicken the heart's left ventricle and impair its function, raising cardiovascular risk.

Credibility 66% Manip. 12% Center
September 10, 2026
1 total
Study Links Nighttime Light Exposure to Cardiac Remodeling
Study Links Nighttime Light Exposure to Cardiac Remodeling

ABC7 Los Angeles • 10 Sep 19:31

Research involving over 11,000 UK participants found that sleeping in environments brighter than 3 lux is associated with thickening of heart muscle walls and reduced cardiac function, suggesting low-light bedrooms may help lower future heart disease risk.

Credibility 72% Manip. 8% Center
September 09, 2026
2 total
Study Links Nighttime Light Exposure to Cardiac Remodeling
Study Links Nighttime Light Exposure to Cardiac Remodeling

Yahoo Health • 09 Sep 22:05

Research involving over 11,000 participants found that sleeping in environments brighter than 3 lux is associated with thickening of heart muscle walls and reduced cardiac function, suggesting nighttime light may be a modifiable risk factor for heart disease.

Credibility 72% Manip. 9% Center
Study Links Low-Level Nighttime Light to Heart Muscle Changes
Study Links Low-Level Nighttime Light to Heart Muscle Changes

CNN • 09 Sep 22:05

Research involving over 11,000 participants found that sleeping in environments brighter than 3 lux is associated with thickening of heart muscle walls and reduced cardiac function, suggesting nighttime light exposure may be a modifiable risk factor for cardiovascular disease.

Credibility 72% Manip. 9% Center