A team of scientists from Harvard Medical School and Duke University has created a new kind of tissue that can change heart activity using only light—no wires, no surgery, no harm. This groundbreaking ...

Most people think of light as harmless. We switch on lamps after sunset, scroll through phones in bed, and keep rooms softly glowing till late. But research now shows that light at night may not be as ...

Good sleep hygiene calls for, among other things, a cool, dark and relaxing environment. It turns out the dark part is key to helping prevent heart disease. People who are exposed to more artificial ...

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 ...

Can Sleeping With Lights On Harm Your Heart Health? As the Harvard study pointed out, when we sleep with lights on, our cardiovascular health may be at risk. Let’s try and understand what it means.