While it might make sense to turn up the Kelvin settings during the day and down toward night, it's not always that simple. MARK HALPER discovers the virtues of spectral power and natural light at offices from coast to coast in the US.

This past summer, LED Magazine held their first one-day immersive Lighting for Health and Wellbeing Conference. The program was exciting, the speakers were passionate, and the field is burgeoning with opportunity. But if there was one phrase uttered more than any other on July 27, it was "It's complicated."

LED Magazine interviews Martin Moore-Ede, M.D, Ph.D at the Lighting for Health and Wellbeing Conference in Newport Beach. California.

Blue light help auto racers stay focused and alert.

DNA and the Night Shift

A new study has found that night shift work is associated with diminished ability to repair DNA. The connection between suppressed melatonin levels and DNA repair is just another example of the harmful effects of blue light at night.

The health risks of light at night. The Good, the Bad, and the Time of Day of Bioactive Blue Light.


Edison’s invention of the light bulb conquered the night, or so we thought. Now, the night seems to be striking back. On almost a regular basis, we see headlines extolling the harmful effects of artificial light at night. “Your smartphone is making you fat!” says one headline. “Light at night is contributing to the diabetes epidemic and increases your chance of heart attacks!” says another. “Working at night increases your chance of getting breast or prostate cancer by over 50%, and if you do get a cancer, the wrong light will prevent the chemotherapy from working.” A map of light at night exposure in Israel correlates with the map of increased rates of breast cancer in Israel. 

To make matters worse, exposure to the wrong light at night can lead to depression and mood disorders.
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