What about the blue light filter on your phone or tablet? Many smartphones have a blue light filter, or night mode, that tints the screen amber. There arent many studies on how well these features work.
Based on my research and that of others, we have consistently found that the blue-enriched light from screens tested in a single night in a sleep laboratory does not affect sleep, says Michael Gradisar, a sleep researcher and professor of psychology at Flinders University in Australia.
For optimal sleep, you want lots of light in the morning and much less at night. Blue light counts more, but it's your total exposure that makes the real difference. It turns out the solution starts the moment you wake up.
While blue light can give us a much needed energy boost during the day, it can also make it harder for us to sleep at night.So while blue light can provide a helpful pick-me-up in the morning, you might want to turn off your laptop a few hours before bed.
It turns out exposure to blue light at night might not be as bad as previously thought. In fact, blue light might just be better than warm light. Either way, more research needs to be done before proclaiming the evils or benefits of blue light.
