Lighting Design for Health, Wellbeing and Quality of Light
A White Paper from the IALD European Regulatory Affairs Working Group
by Ioannis Ladopoulos, Jr. Associate IALD, Senior Electrical Engineer, LEED AP BD+C, WELL AP MSc in Renewable Energy Systems Technology, MA in Lighting Design – Architectural Lighting and Design Management
Kevan Shaw, IALD, C. Eng MILP, Lighting Design Director
Designing a good lighting environment is becoming more complex. Until now, lighting designers, architects, engineers, and lighting manufacturers, pretty much anyone involved in lighting design, have concentrated on creating a lighting environment for the visual functions that are completely integrated with architecture and fulfill the latest trends of sustainability and energy efficiency. However, more recent research suggests that the lighting environment should also support human health and wellbeing. 
The purpose of this paper is to try and shed light in a very detailed manner in all different aspects of lighting that influence the health and wellbeing of the user. Although this is not a medical or scientific paper it tries to take a more holistic approach of what we are calling “Human Centric Lighting”.
Human Centric Lighting is the concept describing the connection between lighting, health and wellbeing. Lighting that focuses on people should balance visual, emotional, and biological benefits of lighting and promote good vision while satisfying the emotional and biological needs of the users. The latest development and work done in the field in the last 15 years found that lighting, especially Human Centric Lighting, also stimulates nonvisual effects on human psychology and physiology.
See the full article here.