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Removing blue from LED lights may reduce obesity, diabetes risk

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Removing bio-active blue wavelengths from white LED lights may reduce some harmful effects, including disruption to the circadian clock, increased appetite, insulin resistance and diabetes risk, according to a press release from Circadian Light, a lighting technology company.

A recent study compared healthy participants who worked 12-hour night shifts under conventional LED lights or under Circadian Light fixtures, which regulate the bio-active blue content in the light according to a 24-hour clock based on location and season.

“The preliminary results show that blue-depleted LED light at night minimizes circadian disruption and also appears to prevent the elevated appetite and insulin resistance seen in the same subjects exposed to conventional LED lights at night,” Martin Moore-Ede, MD, CEO of Circadian Light, said in the release.

The Circadian LED lights remove the blue wavelengths while still maintaining the quality of the white light, according to the release.

The findings of the study were presented at the Light for Health and Wellbeing Conference in Newport Beach, Calif.