Artificial light at night: effects on cardiovascular disease

There is now increasing evidence that exposure to artificial light in the evening and at night increases the risk of cardiovascular disease (Moore-Ede, 2018). Because most “energy efficient” LED light are rich in blue wavelengths, the use of these lights can trigger disease processes involved in hypertension, atherosclerosis, and cardiovascular disease.

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Circadian disruption, melatonin suppression & phase shifting, and activation of chronic inflammatory pathways.



Sunlight during the day is protective; artificial light at night is harmful. Blue light filters on your smart devices and hot blue blockers on your face are protective.

As always, the effects are most pronounced in actual shift workers who see 20-40% increases in risk of cardiovascular disease, heart attacks, and coronary artery disease…

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