New research suggests that exposure to light while sleeping, such as from phone screens or light under a door, could harm your health by affecting your heart. Many people use night-lights or electronic devices at night, but this habit may lead to cardiac remodeling, which involves changes in the heart’s shape and function. A study published in the European Heart Journal found that light exposure during sleep can cause the left ventricle’s wall to thicken, reducing the heart’s internal space and weakening its ability to contract properly. This condition can lead to cardiac dysfunction, highlighting the potential health risks of sleeping with light exposure.
QUESTION: How might reducing light exposure during sleep improve overall heart health and well-being?
This common sleep habit could be changing the shape of your heart—for the worse
