The Life-Changing Power of Sunlight: Light as Nutrition, Near-Infrared Science & Human Health
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The Life-Changing Power of Sunlight: Light as Nutrition, Near-Infrared Science & Human Health
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Dave speaks with Dr. Nicholas Witton, a sleep medicine and light researcher, about the critical role of natural light, especially near-infrared (NIR) light, in human health.
Nicholas explains how we've shifted from living outdoors to spending over 90% of our time indoors under artificial light, particularly LEDs, which emit mainly blue light and lack the full spectrum, including the NIR wavelengths that make up over 50% of solar energy.
They explore how NIR light supports mitochondrial function, ATP production, and glucose regulation, with implications for metabolic health, sleep, mood, and performance.
The conversation explores how modern lighting may contribute to chronic illness and what small changes—such as morning sun exposure or switching to incandescent bulbs—can make a meaningful difference.
This episode reframes sunlight as essential nutrition, not just illumination. If you're interested in sunlight analysis, real estate sun studies, shadow mapping, or optimizing your home for natural light exposure, this is a must-listen.