248 leading scientists warn of Harmful Health Effects of Blue-Rich LED Light at Night

Many of the lights sold today are causing major health problems, including obesity, diabetes, and breast cancer. Why? They are blue-enriched LEDs, which play havoc on people's circadian rhythms during the evening hours.

On October 10th, Blue Light Awareness Day, the Circadian Light Research Center announced the publication in Frontiers in Photonics of a consensus survey which confirms that human circadian clocks are highly sensitive to blue wavelengths, and insufficient daytime blue-rich light and excessive blue-rich light at night, leads to many health disorders.

Lead author Martin Moore-Ede, M.D., Ph.D., director of the Circadian Light Research Center and a former professor at Harvard Medical School, said, "Fewer than 0.5% of lights sold today protect circadian health by altering their blue content across day and night. People should purchase lights for evening and night use that do not contain blue light and use blue-enriched LEDs during daytime only."