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 ...

Tracking people’s light exposure in everyday life reveals that brighter, more stable daily light is linked to feeling less sleepy and responding faster on key cognitive tasks, highlighting light as a ...

A new study has found that exposure to light at night messes with our internal body clock, increasing the risk of mental illness, while daytime light exposure reduces that risk. The findings offer a ...

Turning off the lights at night has long been known to support restful sleep, but new research suggests it may have another significant benefit. Sleeping in total darkness may lower the risk for ...