37 Years Indoors. Light as a Biological Design Tool [HSW]

NeoCon Presentation Description: By age 40, the average person has spent 37 years indoors. Yet we still design spaces that ignore how our brains evolved under daylight, deep contrast and the full spectrum of color. When these cues disappear, mood, sleep, focus and emotional health decline.

This talk reframes light as radiation and a biological nutrient. I show how we can design light and darkness with intention to support circadian function, mental performance and emotional wellbeing. We will explore the role of contrast, zoning, texture and high colour rendering in restoring the richness of natural environments, and how these elements add measurable value to every interior project.

This session gives designers tools they can use the next day. The aim is simple. Better habitats for the humans and other species that now depend on our built environments.

Alexander Cadisch

Alexander Cadisch

Director of Research

Phos Ltd

I am a designer, author and speaker focused on how light shapes the human experience. My work combines neuroscience, colour psychology and biophilic design to improve the health and emotional impact of our indoor environments. I lead Light Tribe by Phos, where I collaborate with scientists and designers to reconnect architecture with biology. My award winning book The Light Within Us explores light as a vital nutrient in design. I speak internationally at design and wellbeing events and host the podcast In Light of It All, which features global guests from neuroscience, design and art.

This content will not be available until 06/07/2026 at 8:00 AM (EDT)