Re-Printed From Residential Lighting Magazine November 2013 Issue
A Lighting Research Center study on lighting systems for Alzheimer’s patients could help an aging population.
Residential Lighting: Tell us how light levels affect circadian rhythms. (more…)
Do you or your kids have trouble falling asleep at night? It could be that you need less exposure to cool blue light, like the predominate light given off by TV’s and computer screens, and more exposure to warm red light, like incandescent light bulbs or evening sunsets. This is because blue light interferes with melatonin production and red light encourages melatonin production. Melatonin is a hormone that helps regulate the sleep-wake cycle by chemically causing drowsiness and lowering body temperature.
Circadian rhythms are tied to sunrise and sunset and have controlled the rhythm of life ever since life began on the planet. Before electricity, humans went to bed when it got dark and woke up when it became light again. The predominate light in the evening for those generations was either natural sunlight or the predominately red light of a fire or torch. Therefore we have evolved to want to sleep when the sun goes down.
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