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Nathan joins Josh Button for the first of a two-part conversation on how light and environment govern human biology — from the way light signals enter the body through the eyes, skin, gut, and lungs, to building a true sleep sanctuary, the role of circadian timing in fasting and leptin signaling, refinements to cold exposure, and the broader idea of health sovereignty: that the body responds predictably when given the environmental inputs it evolved for.

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The information on this site is provided by BioSpectral Systems for educational and informational purposes only. It is not intended to diagnose, treat, cure, or prevent any disease and has not been evaluated by the U.S. Food and Drug Administration or any other regulatory authority. Always consult a qualified healthcare professional before making any changes to your health regimen. By using this site, you acknowledge that you do so at your own discretion and agree that BioSpectral Systems, its affiliates, and contributors are not liable for any outcome resulting from the use of the information presented.

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