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 ...

Many people use bright lights late at night without thinking much about it. Some scroll through their phones in bed, fall asleep with the television on, or keep bright lights glowing in the house long ...

Higher levels of artificial light at night were linked to increased stress-related activity in the brain, inflamed arteries and a higher risk of heart disease, according to a preliminary study ...

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 ...