178: A Lighting Industry Insider on Why the Shift to LEDs May Be a Public Health Disaster

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Ulysse Dormoy has spent 36 years in the lighting industry, watching it transform from analog to digital — and more recently, from a purely visual technology into something with profound implications for human health. In this conversation, Ulysse brings a rare perspective: a lighting industry insider who has followed the science of light and biology deep enough to conclude that his own industry may be part of the problem.

He and his colleague Jeremy Fielding took spectrometers into the retail stores of Oxford Street and Regent Street in London to measure light quality in environments that should, above all others, be getting it right. What they found was revealing — and in some cases, absurd. He also shares how wearable light-measuring technology exposed just how little infrared light he was absorbing on even his most "outdoorsy" days — and what that means for the rest of us spending our lives under LED lighting.

Ulysse draws a compelling parallel between the industrialization of food and the industrialization of light: we've been fed, but we're not being nourished. And he makes the case that red light panels, now booming as a consumer wellness product, are simply supplementation for something our indoor environments have quietly stripped away.

Timestamps

00:00 Light and the Modern Health Crisis
01:06 Meet the Lighting Insider
03:47 From Analog Lighting to LEDs
06:55 Flicker, Drivers, and Hidden Effects
10:08 Why Spectral Quality Matters
11:00 Retail Lighting Experiment
12:28 Where Beauty Stores Get It Wrong
16:01 Why Retail Lighting Needs to Improve
19:34 Discovering the Biology of Light
24:32 The Human Sustainability Perspective
28:05 Light as a Form of Nutrition
30:52 Understanding Bulb Labels and Metrics
33:15 Origins of Life and Energy
35:24 When Efficiency Priorities Backfire
36:45 Light as Prevention
38:18 Rethinking Light Measurement
40:40 Sunlight vs Artificial Light
42:59 Living Indoors Like a Space Station
46:09 What Light Really Is
49:06 Policy, Hospitals, and Lighting
52:51 Anecdotes vs Evidence
58:45 Measuring Light With Wearables
01:03:35 Screens and Indoor Living
01:09:33 Real-Time Biometrics
01:12:27 Closing Thoughts and Show Notes

Connect with Ulysse Dormoy

Website: www.atrium.ltd.uk

Socials: https://www.linkedin.com/in/ulyssedormoy/

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