If your bedroom never gets fully dark because of streetlights, hallway lamps, or city glow, your heart might be working ...

Sleeping in darkness is crucial for the body's repair and regulation, as light disrupts melatonin production and vital ...

You probably already know that screen time and light exposure can make it harder to fall asleep. But you may want to invest ...

Women, beware! Sleeping with the TV going or a light on in your bedroom could make you gain some weight. Researchers with the National Institute of Environmental Health Sciences looked at women who ...

Nighttime exposure to bright light is associated with a higher risk of cardiovascular disease, but there’s plenty you can do about it.

The study found that even a little lighting can increase the risk of depression. Exposure to light at night, even at very low levels, has been linked to an increased risk of depression, according to a ...