Evidence suggests that LEDs might be causing harm to our cells – meaning that the health of the population is being adversely affected by spending lots of time indoors without daily exposure to daylight or full spectrum lighting. However, there are measures that designers and facilities managers can take to improve the situation, as Lorraine Calcott, director and principal designer at it does Lighting Ltd, explains.
For centuries, sailors suffered from a mysterious decline in health during long voyages. Fatigue, poor wound healing, cognitive decline, and premature death were common. The solution, once discovered, was almost embarrassingly simple: citrus fruit. The absence of one essential nutrient had silently undermined human physiology.
Today, we may be facing a parallel problem. Not with vitamin C, but with light.
Modern healthcare estates are extraordinarily efficient. Energy targets are met. Maintenance cycles are optimised. LED systems deliver consistent illuminance with minimal power demand. On paper, this looks like progress.
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