healthful Tag

Look for third-party certification and optimization programs to avoid blue light at the wrong time of day A walk down the light bulb aisle at your local big box store will raise more questions than it answers. The point-of-purchase advertisements make a number of claims: “Natural Daylight,” “Sleep,” “White Light,” and more. But like a lot of advertising, it won’t raise the issue that lighting experts increasingly are trying to solve: Exposure to artificial light at nighttime has been shown to disrupt circadian rhythm, and has been associated with sleep disruption, cancer and other medical problems.