Outdoor Nighttime Light Exposure and Risk of High Blood Pressure in Adults Over Time

Participants exposed to higher levels of outdoor light at night had a 23% increased risk of developing hypertension compared to those with the lowest exposure.

• Higher quintiles of outdoor light at night exposure were associated with increased risk of hypertension, with hazard ratios ranging from 1.14 to 1.23 across the quintiles.
• The association between outdoor light at night and hypertension suggests a potential impact of environmental factors on health outcomes.
• Exploratory analyses indicated that body mass index, fasting blood glucose, and triglycerides could partially explain the relationship between light exposure and hypertension.
• The study highlights the need for further research to clarify the mechanisms linking light at night exposure to hypertension.

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