Add Yahoo as a preferred source to see more of our stories on Google. Avoiding light at night and seeking light during the day may be a simple and effective way to improve mental health. (Getty Images ...

Consider blackout curtains or a sleep mask. A large study of nearly 89,000 participants found that higher exposure to light at night is linked to a significantly greater risk of cardiovascular ...

Research shows that exposure to bright light at night raises mortality risk, particularly from heart disease and diabetes, but seeking daylight could lower these risks and promote longevity. Study: ...

Blue light has acquired a dubious reputation in recent years, frequently blamed for everything from disrupted sleep patterns to digital eye strain. This high-energy light, emitted abundantly by our ...

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 ...

Exposure to sunlight during the day and darkness at night is necessary for the regular operation of the circadian biological ...

Exposure to light at night raises cardiovascular disease risk by up to 50 percent over sleeping in the dark, new research shows. But scientists say the effect isn’t from lack of sleep, but from ...

Close the blinds, draw the curtains and turn off all the lights before bed. Exposure to even moderate ambient lighting during nighttime sleep, compared to sleeping in a dimly lit room, harms your ...

Many of us are surrounded by light at night — from streetlights streaming through our windows to televisions and smartphones by our beds. And now research shows that exposure to light at night in the ...

Title image: A young study participant tries to get some sleep. New research shows that even dim light exposure in the hour before bedtime can disrupt slumber in young children. Credit: Casey Cass/CU ...