Washington (CNN) — For thousands of years, the nighttime’s daily darkness naturally told humans it was time to go to sleep. That’s an evolutionary principle embedded into our brains — and it becomes ...

Dr Glen Jeffery, professor of Neuroscience at University College London, says light from LED bulbs can impact our health ...

For anyone who cares about their so-called "sleep hygiene" — essentially good, deep, restful sleep — it has become conventional wisdom that blue light will wreck it. Blue light is often the wavelength ...

It seems like common sense that the glaring blue light of your smartphone can prevent you from falling asleep. Light is what we need to get us going in the morning, so of course a bright phone screen ...

Lighting has a powerful effect on our circadian rhythms, mood, and overall quality of sleep. As more people become aware of how their environment affects rest, a common question arises: what is the ...

FILE - James Walter uses a phone at home in the Queens borough of New York, on April 7, 2021. Sleep scientists long ago established that insufficient sleep is linked with poor health outcomes, anxiety ...

A new study from Canada finds that blue light before bed might not be as bad for adults as we have been led to believe.