Light, Health and Wellbeing: Implications from chronobiology for architectural design

Abstract

Chronobiology is the science of biological rhythms, more specifically the impact of the 24-hour light-dark cycle and seasonal changes in day length on biochemistry, physiology and behaviour in living organisms. In the last 20 years, chronobiology has moved from its somewhat obscure scientific corner to a high-impact mainstream research field, notably with respect to the discovery of clock genes and peripheral oscillators – and a novel photoreceptor in the eye with specific input to the circadian system. Key discoveries in human chronobiology are related to the impact of light. Recognition of the so-called ‘biological effects of light’ by lighting manufacturers has led to interest in developing new lighting systems that integrate this knowledge. Is it time for the medical mainstream to take notice of what neuroscientists know about the body clock? And is it also time for architects to do so? These questions were explored at a symposium for architects, lighting engineers and manufacturers, initiated by Society for Light Treatment and Biological Rhythms (www. sltbr.org), in order to develop approaches to bridge the gap between these disciplines.